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Finding the Fourth Proportional to 125,496.84, 173,189.70 and 71,781.96

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Solution

The fourth proportional to 125,496.84, 173,189.70 and 71,781.96 is: 99,061.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,496.84 : 173,189.70 = 71,781.96 : x
  2. Step 2: Convert to fraction form
    125,496.84/173,189.70 = 71,781.96/x
  3. Step 3: Cross multiply
    125,496.84x = 173,189.70 × 71,781.96
  4. Step 4: Simplify right side
    125,496.84x = 12,431,896,117.81
  5. Step 5: Solve for x
    x = 12,431,896,117.81/125,496.84
  6. Step 6: Final answer
    x = 99,061.43

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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.