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Finding the Fourth Proportional to 125,838.96, 173,661.87 and 72,134.13

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Solution

The fourth proportional to 125,838.96, 173,661.87 and 72,134.13 is: 99,547.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,838.96 : 173,661.87 = 72,134.13 : x
  2. Step 2: Convert to fraction form
    125,838.96/173,661.87 = 72,134.13/x
  3. Step 3: Cross multiply
    125,838.96x = 173,661.87 × 72,134.13
  4. Step 4: Simplify right side
    125,838.96x = 12,526,947,906.62
  5. Step 5: Solve for x
    x = 12,526,947,906.62/125,838.96
  6. Step 6: Final answer
    x = 99,547.45

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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.