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Finding the Fourth Proportional to 125,738.76, 173,520.72 and 68,379.31

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Solution

The fourth proportional to 125,738.76, 173,520.72 and 68,379.31 is: 94,364.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,738.76 : 173,520.72 = 68,379.31 : x
  2. Step 2: Convert to fraction form
    125,738.76/173,520.72 = 68,379.31/x
  3. Step 3: Cross multiply
    125,738.76x = 173,520.72 × 68,379.31
  4. Step 4: Simplify right side
    125,738.76x = 11,865,227,227.46
  5. Step 5: Solve for x
    x = 11,865,227,227.46/125,738.76
  6. Step 6: Final answer
    x = 94,364.12

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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.