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Finding the Fourth Proportional to 148,539.20, 204,978.38 and 80,554.92

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Solution

The fourth proportional to 148,539.20, 204,978.38 and 80,554.92 is: 111,162.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,539.20 : 204,978.38 = 80,554.92 : x
  2. Step 2: Convert to fraction form
    148,539.20/204,978.38 = 80,554.92/x
  3. Step 3: Cross multiply
    148,539.20x = 204,978.38 × 80,554.92
  4. Step 4: Simplify right side
    148,539.20x = 16,512,016,599.86
  5. Step 5: Solve for x
    x = 16,512,016,599.86/148,539.20
  6. Step 6: Final answer
    x = 111,162.69

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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.