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Finding the Fourth Proportional to 125,565.89, 173,326.42 and 83,138.09

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Solution

The fourth proportional to 125,565.89, 173,326.42 and 83,138.09 is: 114,760.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,565.89 : 173,326.42 = 83,138.09 : x
  2. Step 2: Convert to fraction form
    125,565.89/173,326.42 = 83,138.09/x
  3. Step 3: Cross multiply
    125,565.89x = 173,326.42 × 83,138.09
  4. Step 4: Simplify right side
    125,565.89x = 14,410,028,042.58
  5. Step 5: Solve for x
    x = 14,410,028,042.58/125,565.89
  6. Step 6: Final answer
    x = 114,760.69

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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.