Home / 107,864.20-161,796.30-100,865.80

Finding the Fourth Proportional to 107,864.20, 161,796.30 and 100,865.80

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Solution

The fourth proportional to 107,864.20, 161,796.30 and 100,865.80 is: 151,298.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,864.20 : 161,796.30 = 100,865.80 : x
  2. Step 2: Convert to fraction form
    107,864.20/161,796.30 = 100,865.80/x
  3. Step 3: Cross multiply
    107,864.20x = 161,796.30 × 100,865.80
  4. Step 4: Simplify right side
    107,864.20x = 16,319,713,236.54
  5. Step 5: Solve for x
    x = 16,319,713,236.54/107,864.20
  6. Step 6: Final answer
    x = 151,298.70

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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.