Home / 215,206.20-296,863.20-129,143.16

Finding the Fourth Proportional to 215,206.20, 296,863.20 and 129,143.16

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Solution

The fourth proportional to 215,206.20, 296,863.20 and 129,143.16 is: 178,144.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,206.20 : 296,863.20 = 129,143.16 : x
  2. Step 2: Convert to fraction form
    215,206.20/296,863.20 = 129,143.16/x
  3. Step 3: Cross multiply
    215,206.20x = 296,863.20 × 129,143.16
  4. Step 4: Simplify right side
    215,206.20x = 38,337,851,735.71
  5. Step 5: Solve for x
    x = 38,337,851,735.71/215,206.20
  6. Step 6: Final answer
    x = 178,144.74

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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.