Home / 107,449.40-161,135.86-40,871.80

Finding the Fourth Proportional to 107,449.40, 161,135.86 and 40,871.80

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Solution

The fourth proportional to 107,449.40, 161,135.86 and 40,871.80 is: 61,293.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,449.40 : 161,135.86 = 40,871.80 : x
  2. Step 2: Convert to fraction form
    107,449.40/161,135.86 = 40,871.80/x
  3. Step 3: Cross multiply
    107,449.40x = 161,135.86 × 40,871.80
  4. Step 4: Simplify right side
    107,449.40x = 6,585,912,642.75
  5. Step 5: Solve for x
    x = 6,585,912,642.75/107,449.40
  6. Step 6: Final answer
    x = 61,293.15

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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.