Home / 80,577.67-120,275.03-74,639.97

Finding the Fourth Proportional to 80,577.67, 120,275.03 and 74,639.97

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Solution

The fourth proportional to 80,577.67, 120,275.03 and 74,639.97 is: 111,412.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,577.67 : 120,275.03 = 74,639.97 : x
  2. Step 2: Convert to fraction form
    80,577.67/120,275.03 = 74,639.97/x
  3. Step 3: Cross multiply
    80,577.67x = 120,275.03 × 74,639.97
  4. Step 4: Simplify right side
    80,577.67x = 8,977,324,630.95
  5. Step 5: Solve for x
    x = 8,977,324,630.95/80,577.67
  6. Step 6: Final answer
    x = 111,412.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.