Home / 120,890.52-166,777.17-75,489.68

Finding the Fourth Proportional to 120,890.52, 166,777.17 and 75,489.68

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Solution

The fourth proportional to 120,890.52, 166,777.17 and 75,489.68 is: 104,143.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,890.52 : 166,777.17 = 75,489.68 : x
  2. Step 2: Convert to fraction form
    120,890.52/166,777.17 = 75,489.68/x
  3. Step 3: Cross multiply
    120,890.52x = 166,777.17 × 75,489.68
  4. Step 4: Simplify right side
    120,890.52x = 12,589,955,118.01
  5. Step 5: Solve for x
    x = 12,589,955,118.01/120,890.52
  6. Step 6: Final answer
    x = 104,143.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.