Home / 107,640.90-148,565.00-71,278.25

Finding the Fourth Proportional to 107,640.90, 148,565.00 and 71,278.25

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Solution

The fourth proportional to 107,640.90, 148,565.00 and 71,278.25 is: 98,377.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,640.90 : 148,565.00 = 71,278.25 : x
  2. Step 2: Convert to fraction form
    107,640.90/148,565.00 = 71,278.25/x
  3. Step 3: Cross multiply
    107,640.90x = 148,565.00 × 71,278.25
  4. Step 4: Simplify right side
    107,640.90x = 10,589,452,646.62
  5. Step 5: Solve for x
    x = 10,589,452,646.62/107,640.90
  6. Step 6: Final answer
    x = 98,377.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.