Home / 143,443,906,812.08-197,952,666,547.73-78,339,225,387.42

Finding the Fourth Proportional to 143,443,906,812.08, 197,952,666,547.73 and 78,339,225,387.42

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Solution

The fourth proportional to 143,443,906,812.08, 197,952,666,547.73 and 78,339,225,387.42 is: 108,108,172,074.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,443,906,812.08 : 197,952,666,547.73 = 78,339,225,387.42 : x
  2. Step 2: Convert to fraction form
    143,443,906,812.08/197,952,666,547.73 = 78,339,225,387.42/x
  3. Step 3: Cross multiply
    143,443,906,812.08x = 197,952,666,547.73 × 78,339,225,387.42
  4. Step 4: Simplify right side
    143,443,906,812.08x = 15,507,458,560,723,416,776,704
  5. Step 5: Solve for x
    x = 15,507,458,560,723,416,776,704/143,443,906,812.08
  6. Step 6: Final answer
    x = 108,108,172,074.81

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.