Home / 107,803.20-161,704.80-54,659.10

Finding the Fourth Proportional to 107,803.20, 161,704.80 and 54,659.10

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Solution

The fourth proportional to 107,803.20, 161,704.80 and 54,659.10 is: 81,988.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,803.20 : 161,704.80 = 54,659.10 : x
  2. Step 2: Convert to fraction form
    107,803.20/161,704.80 = 54,659.10/x
  3. Step 3: Cross multiply
    107,803.20x = 161,704.80 × 54,659.10
  4. Step 4: Simplify right side
    107,803.20x = 8,838,638,833.68
  5. Step 5: Solve for x
    x = 8,838,638,833.68/107,803.20
  6. Step 6: Final answer
    x = 81,988.65

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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.