Home / 81,164.34-121,758.12-25,009.20

Finding the Fourth Proportional to 81,164.34, 121,758.12 and 25,009.20

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Solution

The fourth proportional to 81,164.34, 121,758.12 and 25,009.20 is: 37,517.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,164.34 : 121,758.12 = 25,009.20 : x
  2. Step 2: Convert to fraction form
    81,164.34/121,758.12 = 25,009.20/x
  3. Step 3: Cross multiply
    81,164.34x = 121,758.12 × 25,009.20
  4. Step 4: Simplify right side
    81,164.34x = 3,045,073,174.70
  5. Step 5: Solve for x
    x = 3,045,073,174.70/81,164.34
  6. Step 6: Final answer
    x = 37,517.38

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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.