Home / 165,780.15-248,506.20-81,471.30

Finding the Fourth Proportional to 165,780.15, 248,506.20 and 81,471.30

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Solution

The fourth proportional to 165,780.15, 248,506.20 and 81,471.30 is: 122,126.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,780.15 : 248,506.20 = 81,471.30 : x
  2. Step 2: Convert to fraction form
    165,780.15/248,506.20 = 81,471.30/x
  3. Step 3: Cross multiply
    165,780.15x = 248,506.20 × 81,471.30
  4. Step 4: Simplify right side
    165,780.15x = 20,246,123,172.06
  5. Step 5: Solve for x
    x = 20,246,123,172.06/165,780.15
  6. Step 6: Final answer
    x = 122,126.34

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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.