Home / 128,113.45-176,796.68-71,524.82

Finding the Fourth Proportional to 128,113.45, 176,796.68 and 71,524.82

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Solution

The fourth proportional to 128,113.45, 176,796.68 and 71,524.82 is: 98,704.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,113.45 : 176,796.68 = 71,524.82 : x
  2. Step 2: Convert to fraction form
    128,113.45/176,796.68 = 71,524.82/x
  3. Step 3: Cross multiply
    128,113.45x = 176,796.68 × 71,524.82
  4. Step 4: Simplify right side
    128,113.45x = 12,645,350,797.97
  5. Step 5: Solve for x
    x = 12,645,350,797.97/128,113.45
  6. Step 6: Final answer
    x = 98,704.32

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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.