Home / 156,951.13-216,591.49-85,331.15

Finding the Fourth Proportional to 156,951.13, 216,591.49 and 85,331.15

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Solution

The fourth proportional to 156,951.13, 216,591.49 and 85,331.15 is: 117,756.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,951.13 : 216,591.49 = 85,331.15 : x
  2. Step 2: Convert to fraction form
    156,951.13/216,591.49 = 85,331.15/x
  3. Step 3: Cross multiply
    156,951.13x = 216,591.49 × 85,331.15
  4. Step 4: Simplify right side
    156,951.13x = 18,482,000,921.91
  5. Step 5: Solve for x
    x = 18,482,000,921.91/156,951.13
  6. Step 6: Final answer
    x = 117,756.41

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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.