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Finding the Fourth Proportional to 125,311.62, 172,914.05 and 71,600.12

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Solution

The fourth proportional to 125,311.62, 172,914.05 and 71,600.12 is: 98,799.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,311.62 : 172,914.05 = 71,600.12 : x
  2. Step 2: Convert to fraction form
    125,311.62/172,914.05 = 71,600.12/x
  3. Step 3: Cross multiply
    125,311.62x = 172,914.05 × 71,600.12
  4. Step 4: Simplify right side
    125,311.62x = 12,380,666,044.12
  5. Step 5: Solve for x
    x = 12,380,666,044.12/125,311.62
  6. Step 6: Final answer
    x = 98,799.03

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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.