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Finding the Fourth Proportional to 124,792.53, 172,213.29 and 68,203.89

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Solution

The fourth proportional to 124,792.53, 172,213.29 and 68,203.89 is: 94,121.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,792.53 : 172,213.29 = 68,203.89 : x
  2. Step 2: Convert to fraction form
    124,792.53/172,213.29 = 68,203.89/x
  3. Step 3: Cross multiply
    124,792.53x = 172,213.29 × 68,203.89
  4. Step 4: Simplify right side
    124,792.53x = 11,745,616,287.70
  5. Step 5: Solve for x
    x = 11,745,616,287.70/124,792.53
  6. Step 6: Final answer
    x = 94,121.15

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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.