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Finding the Fourth Proportional to 123,625.92, 185,590.27 and 81,541.19

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Solution

The fourth proportional to 123,625.92, 185,590.27 and 81,541.19 is: 122,411.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,625.92 : 185,590.27 = 81,541.19 : x
  2. Step 2: Convert to fraction form
    123,625.92/185,590.27 = 81,541.19/x
  3. Step 3: Cross multiply
    123,625.92x = 185,590.27 × 81,541.19
  4. Step 4: Simplify right side
    123,625.92x = 15,133,251,032.38
  5. Step 5: Solve for x
    x = 15,133,251,032.38/123,625.92
  6. Step 6: Final answer
    x = 122,411.64

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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.