Home / 197,813-272,981.94-108,387.08

Finding the Fourth Proportional to 197,813, 272,981.94 and 108,387.08

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Solution

The fourth proportional to 197,813, 272,981.94 and 108,387.08 is: 149,574.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,813 : 272,981.94 = 108,387.08 : x
  2. Step 2: Convert to fraction form
    197,813/272,981.94 = 108,387.08/x
  3. Step 3: Cross multiply
    197,813x = 272,981.94 × 108,387.08
  4. Step 4: Simplify right side
    197,813x = 29,587,715,369.34
  5. Step 5: Solve for x
    x = 29,587,715,369.34/197,813
  6. Step 6: Final answer
    x = 149,574.17

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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.