Home / 90,078.60-124,343.52-80,630.76

Finding the Fourth Proportional to 90,078.60, 124,343.52 and 80,630.76

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Solution

The fourth proportional to 90,078.60, 124,343.52 and 80,630.76 is: 111,301.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,078.60 : 124,343.52 = 80,630.76 : x
  2. Step 2: Convert to fraction form
    90,078.60/124,343.52 = 80,630.76/x
  3. Step 3: Cross multiply
    90,078.60x = 124,343.52 × 80,630.76
  4. Step 4: Simplify right side
    90,078.60x = 10,025,912,518.68
  5. Step 5: Solve for x
    x = 10,025,912,518.68/90,078.60
  6. Step 6: Final answer
    x = 111,301.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.