Home / 86,565.14-129,897.03-69,145.68

Finding the Fourth Proportional to 86,565.14, 129,897.03 and 69,145.68

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Solution

The fourth proportional to 86,565.14, 129,897.03 and 69,145.68 is: 103,757.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,565.14 : 129,897.03 = 69,145.68 : x
  2. Step 2: Convert to fraction form
    86,565.14/129,897.03 = 69,145.68/x
  3. Step 3: Cross multiply
    86,565.14x = 129,897.03 × 69,145.68
  4. Step 4: Simplify right side
    86,565.14x = 8,981,818,469.33
  5. Step 5: Solve for x
    x = 8,981,818,469.33/86,565.14
  6. Step 6: Final answer
    x = 103,757.92

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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.