Home / 129,214.36-178,306.68-72,634.24

Finding the Fourth Proportional to 129,214.36, 178,306.68 and 72,634.24

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Solution

The fourth proportional to 129,214.36, 178,306.68 and 72,634.24 is: 100,230.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,214.36 : 178,306.68 = 72,634.24 : x
  2. Step 2: Convert to fraction form
    129,214.36/178,306.68 = 72,634.24/x
  3. Step 3: Cross multiply
    129,214.36x = 178,306.68 × 72,634.24
  4. Step 4: Simplify right side
    129,214.36x = 12,951,170,188.72
  5. Step 5: Solve for x
    x = 12,951,170,188.72/129,214.36
  6. Step 6: Final answer
    x = 100,230.12

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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.