Home / 87,430.20-130,853.70-76,932.60

Finding the Fourth Proportional to 87,430.20, 130,853.70 and 76,932.60

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Solution

The fourth proportional to 87,430.20, 130,853.70 and 76,932.60 is: 115,142.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,430.20 : 130,853.70 = 76,932.60 : x
  2. Step 2: Convert to fraction form
    87,430.20/130,853.70 = 76,932.60/x
  3. Step 3: Cross multiply
    87,430.20x = 130,853.70 × 76,932.60
  4. Step 4: Simplify right side
    87,430.20x = 10,066,915,360.62
  5. Step 5: Solve for x
    x = 10,066,915,360.62/87,430.20
  6. Step 6: Final answer
    x = 115,142.31

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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.