Home / 83,619.60-125,429.40-75,163.20

Finding the Fourth Proportional to 83,619.60, 125,429.40 and 75,163.20

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Solution

The fourth proportional to 83,619.60, 125,429.40 and 75,163.20 is: 112,744.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,619.60 : 125,429.40 = 75,163.20 : x
  2. Step 2: Convert to fraction form
    83,619.60/125,429.40 = 75,163.20/x
  3. Step 3: Cross multiply
    83,619.60x = 125,429.40 × 75,163.20
  4. Step 4: Simplify right side
    83,619.60x = 9,427,675,078.08
  5. Step 5: Solve for x
    x = 9,427,675,078.08/83,619.60
  6. Step 6: Final answer
    x = 112,744.80

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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.