Home / 148,672.02-205,168.92-80,689.62

Finding the Fourth Proportional to 148,672.02, 205,168.92 and 80,689.62

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Solution

The fourth proportional to 148,672.02, 205,168.92 and 80,689.62 is: 111,352.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,672.02 : 205,168.92 = 80,689.62 : x
  2. Step 2: Convert to fraction form
    148,672.02/205,168.92 = 80,689.62/x
  3. Step 3: Cross multiply
    148,672.02x = 205,168.92 × 80,689.62
  4. Step 4: Simplify right side
    148,672.02x = 16,555,002,190.61
  5. Step 5: Solve for x
    x = 16,555,002,190.61/148,672.02
  6. Step 6: Final answer
    x = 111,352.51

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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.