Home / 100,456.38-151,286.14-91,488.33

Finding the Fourth Proportional to 100,456.38, 151,286.14 and 91,488.33

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Solution

The fourth proportional to 100,456.38, 151,286.14 and 91,488.33 is: 137,780.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,456.38 : 151,286.14 = 91,488.33 : x
  2. Step 2: Convert to fraction form
    100,456.38/151,286.14 = 91,488.33/x
  3. Step 3: Cross multiply
    100,456.38x = 151,286.14 × 91,488.33
  4. Step 4: Simplify right side
    100,456.38x = 13,840,916,300.75
  5. Step 5: Solve for x
    x = 13,840,916,300.75/100,456.38
  6. Step 6: Final answer
    x = 137,780.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.