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Finding the Fourth Proportional to 186,291.88, 279,367.33 and 79,671.40

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Solution

The fourth proportional to 186,291.88, 279,367.33 and 79,671.40 is: 119,476.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,291.88 : 279,367.33 = 79,671.40 : x
  2. Step 2: Convert to fraction form
    186,291.88/279,367.33 = 79,671.40/x
  3. Step 3: Cross multiply
    186,291.88x = 279,367.33 × 79,671.40
  4. Step 4: Simplify right side
    186,291.88x = 22,257,585,897.01
  5. Step 5: Solve for x
    x = 22,257,585,897.01/186,291.88
  6. Step 6: Final answer
    x = 119,476.95

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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.