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Finding the Fourth Proportional to 125,213.74, 172,799.68 and 71,499.22

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Solution

The fourth proportional to 125,213.74, 172,799.68 and 71,499.22 is: 98,671.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,213.74 : 172,799.68 = 71,499.22 : x
  2. Step 2: Convert to fraction form
    125,213.74/172,799.68 = 71,499.22/x
  3. Step 3: Cross multiply
    125,213.74x = 172,799.68 × 71,499.22
  4. Step 4: Simplify right side
    125,213.74x = 12,355,042,336.25
  5. Step 5: Solve for x
    x = 12,355,042,336.25/125,213.74
  6. Step 6: Final answer
    x = 98,671.62

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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.