Home / 87,346.60-130,847.10-81,125.80

Finding the Fourth Proportional to 87,346.60, 130,847.10 and 81,125.80

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Solution

The fourth proportional to 87,346.60, 130,847.10 and 81,125.80 is: 121,528.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,346.60 : 130,847.10 = 81,125.80 : x
  2. Step 2: Convert to fraction form
    87,346.60/130,847.10 = 81,125.80/x
  3. Step 3: Cross multiply
    87,346.60x = 130,847.10 × 81,125.80
  4. Step 4: Simplify right side
    87,346.60x = 10,615,075,665.18
  5. Step 5: Solve for x
    x = 10,615,075,665.18/87,346.60
  6. Step 6: Final answer
    x = 121,528.21

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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.