Home / 107,959.20-161,720.10-61,157.40

Finding the Fourth Proportional to 107,959.20, 161,720.10 and 61,157.40

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Solution

The fourth proportional to 107,959.20, 161,720.10 and 61,157.40 is: 91,612.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,959.20 : 161,720.10 = 61,157.40 : x
  2. Step 2: Convert to fraction form
    107,959.20/161,720.10 = 61,157.40/x
  3. Step 3: Cross multiply
    107,959.20x = 161,720.10 × 61,157.40
  4. Step 4: Simplify right side
    107,959.20x = 9,890,380,843.74
  5. Step 5: Solve for x
    x = 9,890,380,843.74/107,959.20
  6. Step 6: Final answer
    x = 91,612.21

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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.