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Finding the Fourth Proportional to 125,751.50, 173,538.21 and 68,391.36

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Solution

The fourth proportional to 125,751.50, 173,538.21 and 68,391.36 is: 94,380.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,751.50 : 173,538.21 = 68,391.36 : x
  2. Step 2: Convert to fraction form
    125,751.50/173,538.21 = 68,391.36/x
  3. Step 3: Cross multiply
    125,751.50x = 173,538.21 × 68,391.36
  4. Step 4: Simplify right side
    125,751.50x = 11,868,514,193.87
  5. Step 5: Solve for x
    x = 11,868,514,193.87/125,751.50
  6. Step 6: Final answer
    x = 94,380.70

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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.