Home / 87,639.40-131,468.70-84,874.60

Finding the Fourth Proportional to 87,639.40, 131,468.70 and 84,874.60

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Solution

The fourth proportional to 87,639.40, 131,468.70 and 84,874.60 is: 127,321.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,639.40 : 131,468.70 = 84,874.60 : x
  2. Step 2: Convert to fraction form
    87,639.40/131,468.70 = 84,874.60/x
  3. Step 3: Cross multiply
    87,639.40x = 131,468.70 × 84,874.60
  4. Step 4: Simplify right side
    87,639.40x = 11,158,353,325.02
  5. Step 5: Solve for x
    x = 11,158,353,325.02/87,639.40
  6. Step 6: Final answer
    x = 127,321.20

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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.