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Finding the Fourth Proportional to 125,680.80, 173,520.72 and 83,296.80

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Solution

The fourth proportional to 125,680.80, 173,520.72 and 83,296.80 is: 115,003.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,680.80 : 173,520.72 = 83,296.80 : x
  2. Step 2: Convert to fraction form
    125,680.80/173,520.72 = 83,296.80/x
  3. Step 3: Cross multiply
    125,680.80x = 173,520.72 × 83,296.80
  4. Step 4: Simplify right side
    125,680.80x = 14,453,720,709.70
  5. Step 5: Solve for x
    x = 14,453,720,709.70/125,680.80
  6. Step 6: Final answer
    x = 115,003.41

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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.