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Finding the Fourth Proportional to 124,652.61, 172,034.15 and 76,904.73

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Solution

The fourth proportional to 124,652.61, 172,034.15 and 76,904.73 is: 106,136.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,652.61 : 172,034.15 = 76,904.73 : x
  2. Step 2: Convert to fraction form
    124,652.61/172,034.15 = 76,904.73/x
  3. Step 3: Cross multiply
    124,652.61x = 172,034.15 × 76,904.73
  4. Step 4: Simplify right side
    124,652.61x = 13,230,239,472.01
  5. Step 5: Solve for x
    x = 13,230,239,472.01/124,652.61
  6. Step 6: Final answer
    x = 106,136.88

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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.