Home / 128,552.78-192,833.27-39,807.05

Finding the Fourth Proportional to 128,552.78, 192,833.27 and 39,807.05

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Solution

The fourth proportional to 128,552.78, 192,833.27 and 39,807.05 is: 59,711.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,552.78 : 192,833.27 = 39,807.05 : x
  2. Step 2: Convert to fraction form
    128,552.78/192,833.27 = 39,807.05/x
  3. Step 3: Cross multiply
    128,552.78x = 192,833.27 × 39,807.05
  4. Step 4: Simplify right side
    128,552.78x = 7,676,123,691.32
  5. Step 5: Solve for x
    x = 7,676,123,691.32/128,552.78
  6. Step 6: Final answer
    x = 59,711.85

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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.