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Finding the Fourth Proportional to 186,213.13, 279,099.93 and 79,565.90

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Solution

The fourth proportional to 186,213.13, 279,099.93 and 79,565.90 is: 119,254.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,213.13 : 279,099.93 = 79,565.90 : x
  2. Step 2: Convert to fraction form
    186,213.13/279,099.93 = 79,565.90/x
  3. Step 3: Cross multiply
    186,213.13x = 279,099.93 × 79,565.90
  4. Step 4: Simplify right side
    186,213.13x = 22,206,835,575.70
  5. Step 5: Solve for x
    x = 22,206,835,575.70/186,213.13
  6. Step 6: Final answer
    x = 119,254.94

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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.