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Finding the Fourth Proportional to 125,120.48, 172,659.48 and 71,410.52

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Solution

The fourth proportional to 125,120.48, 172,659.48 and 71,410.52 is: 98,542.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,120.48 : 172,659.48 = 71,410.52 : x
  2. Step 2: Convert to fraction form
    125,120.48/172,659.48 = 71,410.52/x
  3. Step 3: Cross multiply
    125,120.48x = 172,659.48 × 71,410.52
  4. Step 4: Simplify right side
    125,120.48x = 12,329,703,249.73
  5. Step 5: Solve for x
    x = 12,329,703,249.73/125,120.48
  6. Step 6: Final answer
    x = 98,542.65

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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.