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Finding the Fourth Proportional to 124,732, 172,133.96 and 68,147.04

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Solution

The fourth proportional to 124,732, 172,133.96 and 68,147.04 is: 94,044.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,732 : 172,133.96 = 68,147.04 : x
  2. Step 2: Convert to fraction form
    124,732/172,133.96 = 68,147.04/x
  3. Step 3: Cross multiply
    124,732x = 172,133.96 × 68,147.04
  4. Step 4: Simplify right side
    124,732x = 11,730,419,857.48
  5. Step 5: Solve for x
    x = 11,730,419,857.48/124,732
  6. Step 6: Final answer
    x = 94,044.99

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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.