Home / 122,132.80-168,546.18-81,819.10

Finding the Fourth Proportional to 122,132.80, 168,546.18 and 81,819.10

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Solution

The fourth proportional to 122,132.80, 168,546.18 and 81,819.10 is: 112,912.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,132.80 : 168,546.18 = 81,819.10 : x
  2. Step 2: Convert to fraction form
    122,132.80/168,546.18 = 81,819.10/x
  3. Step 3: Cross multiply
    122,132.80x = 168,546.18 × 81,819.10
  4. Step 4: Simplify right side
    122,132.80x = 13,790,296,756.04
  5. Step 5: Solve for x
    x = 13,790,296,756.04/122,132.80
  6. Step 6: Final answer
    x = 112,912.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.