Home / 87,445.40-131,168.10-66,450.20

Finding the Fourth Proportional to 87,445.40, 131,168.10 and 66,450.20

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Solution

The fourth proportional to 87,445.40, 131,168.10 and 66,450.20 is: 99,675.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,445.40 : 131,168.10 = 66,450.20 : x
  2. Step 2: Convert to fraction form
    87,445.40/131,168.10 = 66,450.20/x
  3. Step 3: Cross multiply
    87,445.40x = 131,168.10 × 66,450.20
  4. Step 4: Simplify right side
    87,445.40x = 8,716,146,478.62
  5. Step 5: Solve for x
    x = 8,716,146,478.62/87,445.40
  6. Step 6: Final answer
    x = 99,675.30

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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.