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Finding the Fourth Proportional to 107,356.20, 161,034.30 and 65,826.60

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Solution

The fourth proportional to 107,356.20, 161,034.30 and 65,826.60 is: 98,739.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,356.20 : 161,034.30 = 65,826.60 : x
  2. Step 2: Convert to fraction form
    107,356.20/161,034.30 = 65,826.60/x
  3. Step 3: Cross multiply
    107,356.20x = 161,034.30 × 65,826.60
  4. Step 4: Simplify right side
    107,356.20x = 10,600,340,452.38
  5. Step 5: Solve for x
    x = 10,600,340,452.38/107,356.20
  6. Step 6: Final answer
    x = 98,739.90

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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.