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Finding the Fourth Proportional to 105,599.76, 157,961.88 and 80,449.52

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Solution

The fourth proportional to 105,599.76, 157,961.88 and 80,449.52 is: 120,340.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,599.76 : 157,961.88 = 80,449.52 : x
  2. Step 2: Convert to fraction form
    105,599.76/157,961.88 = 80,449.52/x
  3. Step 3: Cross multiply
    105,599.76x = 157,961.88 × 80,449.52
  4. Step 4: Simplify right side
    105,599.76x = 12,707,957,424.30
  5. Step 5: Solve for x
    x = 12,707,957,424.30/105,599.76
  6. Step 6: Final answer
    x = 120,340.78

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1.5x scale

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.