Home / 117,827.20-176,308.80-86,723.20

Finding the Fourth Proportional to 117,827.20, 176,308.80 and 86,723.20

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Solution

The fourth proportional to 117,827.20, 176,308.80 and 86,723.20 is: 129,766.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,827.20 : 176,308.80 = 86,723.20 : x
  2. Step 2: Convert to fraction form
    117,827.20/176,308.80 = 86,723.20/x
  3. Step 3: Cross multiply
    117,827.20x = 176,308.80 × 86,723.20
  4. Step 4: Simplify right side
    117,827.20x = 15,290,063,324.16
  5. Step 5: Solve for x
    x = 15,290,063,324.16/117,827.20
  6. Step 6: Final answer
    x = 129,766.84

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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.