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Finding the Fourth Proportional to 124,822, 172,254.36 and 68,233.78

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Solution

The fourth proportional to 124,822, 172,254.36 and 68,233.78 is: 94,162.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,822 : 172,254.36 = 68,233.78 : x
  2. Step 2: Convert to fraction form
    124,822/172,254.36 = 68,233.78/x
  3. Step 3: Cross multiply
    124,822x = 172,254.36 × 68,233.78
  4. Step 4: Simplify right side
    124,822x = 11,753,566,104.28
  5. Step 5: Solve for x
    x = 11,753,566,104.28/124,822
  6. Step 6: Final answer
    x = 94,162.62

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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.