Home / 128,174.27-192,260.79-71,221.34

Finding the Fourth Proportional to 128,174.27, 192,260.79 and 71,221.34

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Solution

The fourth proportional to 128,174.27, 192,260.79 and 71,221.34 is: 106,831.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,174.27 : 192,260.79 = 71,221.34 : x
  2. Step 2: Convert to fraction form
    128,174.27/192,260.79 = 71,221.34/x
  3. Step 3: Cross multiply
    128,174.27x = 192,260.79 × 71,221.34
  4. Step 4: Simplify right side
    128,174.27x = 13,693,070,131.95
  5. Step 5: Solve for x
    x = 13,693,070,131.95/128,174.27
  6. Step 6: Final answer
    x = 106,831.66

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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.