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Finding the Fourth Proportional to 125,678.80, 173,517.96 and 83,294.80

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Solution

The fourth proportional to 125,678.80, 173,517.96 and 83,294.80 is: 115,000.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,678.80 : 173,517.96 = 83,294.80 : x
  2. Step 2: Convert to fraction form
    125,678.80/173,517.96 = 83,294.80/x
  3. Step 3: Cross multiply
    125,678.80x = 173,517.96 × 83,294.80
  4. Step 4: Simplify right side
    125,678.80x = 14,453,143,774.61
  5. Step 5: Solve for x
    x = 14,453,143,774.61/125,678.80
  6. Step 6: Final answer
    x = 115,000.65

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1.5x scale

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.