Home / 128,264.56-192,400.20-60,780.76

Finding the Fourth Proportional to 128,264.56, 192,400.20 and 60,780.76

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Solution

The fourth proportional to 128,264.56, 192,400.20 and 60,780.76 is: 91,172.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,264.56 : 192,400.20 = 60,780.76 : x
  2. Step 2: Convert to fraction form
    128,264.56/192,400.20 = 60,780.76/x
  3. Step 3: Cross multiply
    128,264.56x = 192,400.20 × 60,780.76
  4. Step 4: Simplify right side
    128,264.56x = 11,694,230,380.15
  5. Step 5: Solve for x
    x = 11,694,230,380.15/128,264.56
  6. Step 6: Final answer
    x = 91,172.73

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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.