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Finding the Fourth Proportional to 127,612.61, 191,446.63 and 38,863.83

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Solution

The fourth proportional to 127,612.61, 191,446.63 and 38,863.83 is: 58,304.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,612.61 : 191,446.63 = 38,863.83 : x
  2. Step 2: Convert to fraction form
    127,612.61/191,446.63 = 38,863.83/x
  3. Step 3: Cross multiply
    127,612.61x = 191,446.63 × 38,863.83
  4. Step 4: Simplify right side
    127,612.61x = 7,440,349,282.39
  5. Step 5: Solve for x
    x = 7,440,349,282.39/127,612.61
  6. Step 6: Final answer
    x = 58,304.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.