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Finding the Fourth Proportional to 186,379.89, 279,463.17 and 86,488.65

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Solution

The fourth proportional to 186,379.89, 279,463.17 and 86,488.65 is: 129,683.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,379.89 : 279,463.17 = 86,488.65 : x
  2. Step 2: Convert to fraction form
    186,379.89/279,463.17 = 86,488.65/x
  3. Step 3: Cross multiply
    186,379.89x = 279,463.17 × 86,488.65
  4. Step 4: Simplify right side
    186,379.89x = 24,170,392,298.02
  5. Step 5: Solve for x
    x = 24,170,392,298.02/186,379.89
  6. Step 6: Final answer
    x = 129,683.48

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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.