Home / 128,155.12-192,301.62-53,326.92

Finding the Fourth Proportional to 128,155.12, 192,301.62 and 53,326.92

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Solution

The fourth proportional to 128,155.12, 192,301.62 and 53,326.92 is: 80,019.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,155.12 : 192,301.62 = 53,326.92 : x
  2. Step 2: Convert to fraction form
    128,155.12/192,301.62 = 53,326.92/x
  3. Step 3: Cross multiply
    128,155.12x = 192,301.62 × 53,326.92
  4. Step 4: Simplify right side
    128,155.12x = 10,254,853,105.61
  5. Step 5: Solve for x
    x = 10,254,853,105.61/128,155.12
  6. Step 6: Final answer
    x = 80,019.07

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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.