Home / 87,350.40-131,025.60-81,518.40

Finding the Fourth Proportional to 87,350.40, 131,025.60 and 81,518.40

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Solution

The fourth proportional to 87,350.40, 131,025.60 and 81,518.40 is: 122,277.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,350.40 : 131,025.60 = 81,518.40 : x
  2. Step 2: Convert to fraction form
    87,350.40/131,025.60 = 81,518.40/x
  3. Step 3: Cross multiply
    87,350.40x = 131,025.60 × 81,518.40
  4. Step 4: Simplify right side
    87,350.40x = 10,680,997,271.04
  5. Step 5: Solve for x
    x = 10,680,997,271.04/87,350.40
  6. Step 6: Final answer
    x = 122,277.60

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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.