Home / 157,531.66-217,270.82-100,948.30

Finding the Fourth Proportional to 157,531.66, 217,270.82 and 100,948.30

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Solution

The fourth proportional to 157,531.66, 217,270.82 and 100,948.30 is: 139,229.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,531.66 : 217,270.82 = 100,948.30 : x
  2. Step 2: Convert to fraction form
    157,531.66/217,270.82 = 100,948.30/x
  3. Step 3: Cross multiply
    157,531.66x = 217,270.82 × 100,948.30
  4. Step 4: Simplify right side
    157,531.66x = 21,933,119,918.61
  5. Step 5: Solve for x
    x = 21,933,119,918.61/157,531.66
  6. Step 6: Final answer
    x = 139,229.92

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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.