Home / 120,175.16-180,105.05-88,436.66

Finding the Fourth Proportional to 120,175.16, 180,105.05 and 88,436.66

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Solution

The fourth proportional to 120,175.16, 180,105.05 and 88,436.66 is: 132,538.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,175.16 : 180,105.05 = 88,436.66 : x
  2. Step 2: Convert to fraction form
    120,175.16/180,105.05 = 88,436.66/x
  3. Step 3: Cross multiply
    120,175.16x = 180,105.05 × 88,436.66
  4. Step 4: Simplify right side
    120,175.16x = 15,927,888,391.70
  5. Step 5: Solve for x
    x = 15,927,888,391.70/120,175.16
  6. Step 6: Final answer
    x = 132,538.95

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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.