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Finding the Fourth Proportional to 186,371.69, 279,360.70 and 91,469.86

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Solution

The fourth proportional to 186,371.69, 279,360.70 and 91,469.86 is: 137,108.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,371.69 : 279,360.70 = 91,469.86 : x
  2. Step 2: Convert to fraction form
    186,371.69/279,360.70 = 91,469.86/x
  3. Step 3: Cross multiply
    186,371.69x = 279,360.70 × 91,469.86
  4. Step 4: Simplify right side
    186,371.69x = 25,553,083,191.43
  5. Step 5: Solve for x
    x = 25,553,083,191.43/186,371.69
  6. Step 6: Final answer
    x = 137,108.18

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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.