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Finding the Fourth Proportional to 148,572.61, 205,028.98 and 80,589.41

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Solution

The fourth proportional to 148,572.61, 205,028.98 and 80,589.41 is: 111,212.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,572.61 : 205,028.98 = 80,589.41 : x
  2. Step 2: Convert to fraction form
    148,572.61/205,028.98 = 80,589.41/x
  3. Step 3: Cross multiply
    148,572.61x = 205,028.98 × 80,589.41
  4. Step 4: Simplify right side
    148,572.61x = 16,523,164,375.55
  5. Step 5: Solve for x
    x = 16,523,164,375.55/148,572.61
  6. Step 6: Final answer
    x = 111,212.72

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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.