Home / 87,265.40-130,898.10-80,850.20

Finding the Fourth Proportional to 87,265.40, 130,898.10 and 80,850.20

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Solution

The fourth proportional to 87,265.40, 130,898.10 and 80,850.20 is: 121,275.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,265.40 : 130,898.10 = 80,850.20 : x
  2. Step 2: Convert to fraction form
    87,265.40/130,898.10 = 80,850.20/x
  3. Step 3: Cross multiply
    87,265.40x = 130,898.10 × 80,850.20
  4. Step 4: Simplify right side
    87,265.40x = 10,583,137,564.62
  5. Step 5: Solve for x
    x = 10,583,137,564.62/87,265.40
  6. Step 6: Final answer
    x = 121,275.30

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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.