Home / 87,445.10-131,200.05-84,205.10

Finding the Fourth Proportional to 87,445.10, 131,200.05 and 84,205.10

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Solution

The fourth proportional to 87,445.10, 131,200.05 and 84,205.10 is: 126,338.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,445.10 : 131,200.05 = 84,205.10 : x
  2. Step 2: Convert to fraction form
    87,445.10/131,200.05 = 84,205.10/x
  3. Step 3: Cross multiply
    87,445.10x = 131,200.05 × 84,205.10
  4. Step 4: Simplify right side
    87,445.10x = 11,047,713,330.26
  5. Step 5: Solve for x
    x = 11,047,713,330.26/87,445.10
  6. Step 6: Final answer
    x = 126,338.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.