Home / 128,882.29-193,226.19-84,520.21

Finding the Fourth Proportional to 128,882.29, 193,226.19 and 84,520.21

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Solution

The fourth proportional to 128,882.29, 193,226.19 and 84,520.21 is: 126,716.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,882.29 : 193,226.19 = 84,520.21 : x
  2. Step 2: Convert to fraction form
    128,882.29/193,226.19 = 84,520.21/x
  3. Step 3: Cross multiply
    128,882.29x = 193,226.19 × 84,520.21
  4. Step 4: Simplify right side
    128,882.29x = 16,331,518,156.30
  5. Step 5: Solve for x
    x = 16,331,518,156.30/128,882.29
  6. Step 6: Final answer
    x = 126,716.54

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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.