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Finding the Fourth Proportional to 186,379.38, 279,462.43 and 86,488.15

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Solution

The fourth proportional to 186,379.38, 279,462.43 and 86,488.15 is: 129,682.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,379.38 : 279,462.43 = 86,488.15 : x
  2. Step 2: Convert to fraction form
    186,379.38/279,462.43 = 86,488.15/x
  3. Step 3: Cross multiply
    186,379.38x = 279,462.43 × 86,488.15
  4. Step 4: Simplify right side
    186,379.38x = 24,170,188,565.20
  5. Step 5: Solve for x
    x = 24,170,188,565.20/186,379.38
  6. Step 6: Final answer
    x = 129,682.74

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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.