Home / 125,372.20-172,979.14-80,686.12

Finding the Fourth Proportional to 125,372.20, 172,979.14 and 80,686.12

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Solution

The fourth proportional to 125,372.20, 172,979.14 and 80,686.12 is: 111,324.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,372.20 : 172,979.14 = 80,686.12 : x
  2. Step 2: Convert to fraction form
    125,372.20/172,979.14 = 80,686.12/x
  3. Step 3: Cross multiply
    125,372.20x = 172,979.14 × 80,686.12
  4. Step 4: Simplify right side
    125,372.20x = 13,957,015,647.54
  5. Step 5: Solve for x
    x = 13,957,015,647.54/125,372.20
  6. Step 6: Final answer
    x = 111,324.64

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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.