Home / 87,327.60-130,991.40-74,205.60

Finding the Fourth Proportional to 87,327.60, 130,991.40 and 74,205.60

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Solution

The fourth proportional to 87,327.60, 130,991.40 and 74,205.60 is: 111,308.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,327.60 : 130,991.40 = 74,205.60 : x
  2. Step 2: Convert to fraction form
    87,327.60/130,991.40 = 74,205.60/x
  3. Step 3: Cross multiply
    87,327.60x = 130,991.40 × 74,205.60
  4. Step 4: Simplify right side
    87,327.60x = 9,720,295,431.84
  5. Step 5: Solve for x
    x = 9,720,295,431.84/87,327.60
  6. Step 6: Final answer
    x = 111,308.40

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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.