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Finding the Fourth Proportional to 185,143.80, 255,322.92 and 127,691.31

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Solution

The fourth proportional to 185,143.80, 255,322.92 and 127,691.31 is: 176,092.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,143.80 : 255,322.92 = 127,691.31 : x
  2. Step 2: Convert to fraction form
    185,143.80/255,322.92 = 127,691.31/x
  3. Step 3: Cross multiply
    185,143.80x = 255,322.92 × 127,691.31
  4. Step 4: Simplify right side
    185,143.80x = 32,602,518,127.83
  5. Step 5: Solve for x
    x = 32,602,518,127.83/185,143.80
  6. Step 6: Final answer
    x = 176,092.95

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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.