Home / 119,972.90-165,487.56-71,540.87

Finding the Fourth Proportional to 119,972.90, 165,487.56 and 71,540.87

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Solution

The fourth proportional to 119,972.90, 165,487.56 and 71,540.87 is: 98,681.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,972.90 : 165,487.56 = 71,540.87 : x
  2. Step 2: Convert to fraction form
    119,972.90/165,487.56 = 71,540.87/x
  3. Step 3: Cross multiply
    119,972.90x = 165,487.56 × 71,540.87
  4. Step 4: Simplify right side
    119,972.90x = 11,839,123,851.73
  5. Step 5: Solve for x
    x = 11,839,123,851.73/119,972.90
  6. Step 6: Final answer
    x = 98,681.65

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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.