Home / 87,461.20-130,900.20-76,963.60

Finding the Fourth Proportional to 87,461.20, 130,900.20 and 76,963.60

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Solution

The fourth proportional to 87,461.20, 130,900.20 and 76,963.60 is: 115,188.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,461.20 : 130,900.20 = 76,963.60 : x
  2. Step 2: Convert to fraction form
    87,461.20/130,900.20 = 76,963.60/x
  3. Step 3: Cross multiply
    87,461.20x = 130,900.20 × 76,963.60
  4. Step 4: Simplify right side
    87,461.20x = 10,074,550,632.72
  5. Step 5: Solve for x
    x = 10,074,550,632.72/87,461.20
  6. Step 6: Final answer
    x = 115,188.80

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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.