Home / 186,422.10-279,780.77-81,314.88

Finding the Fourth Proportional to 186,422.10, 279,780.77 and 81,314.88

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Solution

The fourth proportional to 186,422.10, 279,780.77 and 81,314.88 is: 122,036.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,422.10 : 279,780.77 = 81,314.88 : x
  2. Step 2: Convert to fraction form
    186,422.10/279,780.77 = 81,314.88/x
  3. Step 3: Cross multiply
    186,422.10x = 279,780.77 × 81,314.88
  4. Step 4: Simplify right side
    186,422.10x = 22,750,339,738.86
  5. Step 5: Solve for x
    x = 22,750,339,738.86/186,422.10
  6. Step 6: Final answer
    x = 122,036.71

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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.