Home / 125,428.27-188,135.07-91,728.42

Finding the Fourth Proportional to 125,428.27, 188,135.07 and 91,728.42

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Solution

The fourth proportional to 125,428.27, 188,135.07 and 91,728.42 is: 137,587.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,428.27 : 188,135.07 = 91,728.42 : x
  2. Step 2: Convert to fraction form
    125,428.27/188,135.07 = 91,728.42/x
  3. Step 3: Cross multiply
    125,428.27x = 188,135.07 × 91,728.42
  4. Step 4: Simplify right side
    125,428.27x = 17,257,332,717.69
  5. Step 5: Solve for x
    x = 17,257,332,717.69/125,428.27
  6. Step 6: Final answer
    x = 137,587.27

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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.