Home / 143,330.68-197,798.70-78,802.64

Finding the Fourth Proportional to 143,330.68, 197,798.70 and 78,802.64

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Solution

The fourth proportional to 143,330.68, 197,798.70 and 78,802.64 is: 108,748.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,330.68 : 197,798.70 = 78,802.64 : x
  2. Step 2: Convert to fraction form
    143,330.68/197,798.70 = 78,802.64/x
  3. Step 3: Cross multiply
    143,330.68x = 197,798.70 × 78,802.64
  4. Step 4: Simplify right side
    143,330.68x = 15,587,059,748.57
  5. Step 5: Solve for x
    x = 15,587,059,748.57/143,330.68
  6. Step 6: Final answer
    x = 108,748.94

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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.