Home / 107,425.20-161,191.26-81,290.28

Finding the Fourth Proportional to 107,425.20, 161,191.26 and 81,290.28

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Solution

The fourth proportional to 107,425.20, 161,191.26 and 81,290.28 is: 121,975.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,425.20 : 161,191.26 = 81,290.28 : x
  2. Step 2: Convert to fraction form
    107,425.20/161,191.26 = 81,290.28/x
  3. Step 3: Cross multiply
    107,425.20x = 161,191.26 × 81,290.28
  4. Step 4: Simplify right side
    107,425.20x = 13,103,282,658.95
  5. Step 5: Solve for x
    x = 13,103,282,658.95/107,425.20
  6. Step 6: Final answer
    x = 121,975.87

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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.