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Finding the Fourth Proportional to 186,589.38, 279,718.32 and 72,710.83

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Solution

The fourth proportional to 186,589.38, 279,718.32 and 72,710.83 is: 109,001.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,589.38 : 279,718.32 = 72,710.83 : x
  2. Step 2: Convert to fraction form
    186,589.38/279,718.32 = 72,710.83/x
  3. Step 3: Cross multiply
    186,589.38x = 279,718.32 × 72,710.83
  4. Step 4: Simplify right side
    186,589.38x = 20,338,551,835.72
  5. Step 5: Solve for x
    x = 20,338,551,835.72/186,589.38
  6. Step 6: Final answer
    x = 109,001.66

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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.