Home / 129,264.90-178,396.33-71,915.02

Finding the Fourth Proportional to 129,264.90, 178,396.33 and 71,915.02

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Solution

The fourth proportional to 129,264.90, 178,396.33 and 71,915.02 is: 99,248.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,264.90 : 178,396.33 = 71,915.02 : x
  2. Step 2: Convert to fraction form
    129,264.90/178,396.33 = 71,915.02/x
  3. Step 3: Cross multiply
    129,264.90x = 178,396.33 × 71,915.02
  4. Step 4: Simplify right side
    129,264.90x = 12,829,376,354.68
  5. Step 5: Solve for x
    x = 12,829,376,354.68/129,264.90
  6. Step 6: Final answer
    x = 99,248.73

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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.