Home / 120,817.80-181,126.92-53,301.72

Finding the Fourth Proportional to 120,817.80, 181,126.92 and 53,301.72

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Solution

The fourth proportional to 120,817.80, 181,126.92 and 53,301.72 is: 79,908.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,817.80 : 181,126.92 = 53,301.72 : x
  2. Step 2: Convert to fraction form
    120,817.80/181,126.92 = 53,301.72/x
  3. Step 3: Cross multiply
    120,817.80x = 181,126.92 × 53,301.72
  4. Step 4: Simplify right side
    120,817.80x = 9,654,376,374.30
  5. Step 5: Solve for x
    x = 9,654,376,374.30/120,817.80
  6. Step 6: Final answer
    x = 79,908.56

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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.