Home / 107,816.20-161,724.30-100,817.80

Finding the Fourth Proportional to 107,816.20, 161,724.30 and 100,817.80

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Solution

The fourth proportional to 107,816.20, 161,724.30 and 100,817.80 is: 151,226.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,816.20 : 161,724.30 = 100,817.80 : x
  2. Step 2: Convert to fraction form
    107,816.20/161,724.30 = 100,817.80/x
  3. Step 3: Cross multiply
    107,816.20x = 161,724.30 × 100,817.80
  4. Step 4: Simplify right side
    107,816.20x = 16,304,688,132.54
  5. Step 5: Solve for x
    x = 16,304,688,132.54/107,816.20
  6. Step 6: Final answer
    x = 151,226.70

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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.