Home / 165,716.40-248,615.10-76,951.20

Finding the Fourth Proportional to 165,716.40, 248,615.10 and 76,951.20

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Solution

The fourth proportional to 165,716.40, 248,615.10 and 76,951.20 is: 115,445.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,716.40 : 248,615.10 = 76,951.20 : x
  2. Step 2: Convert to fraction form
    165,716.40/248,615.10 = 76,951.20/x
  3. Step 3: Cross multiply
    165,716.40x = 248,615.10 × 76,951.20
  4. Step 4: Simplify right side
    165,716.40x = 19,131,230,283.12
  5. Step 5: Solve for x
    x = 19,131,230,283.12/165,716.40
  6. Step 6: Final answer
    x = 115,445.61

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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.