Home / 120,815.80-181,123.92-53,299.72

Finding the Fourth Proportional to 120,815.80, 181,123.92 and 53,299.72

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Solution

The fourth proportional to 120,815.80, 181,123.92 and 53,299.72 is: 79,905.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,815.80 : 181,123.92 = 53,299.72 : x
  2. Step 2: Convert to fraction form
    120,815.80/181,123.92 = 53,299.72/x
  3. Step 3: Cross multiply
    120,815.80x = 181,123.92 × 53,299.72
  4. Step 4: Simplify right side
    120,815.80x = 9,653,854,221.30
  5. Step 5: Solve for x
    x = 9,653,854,221.30/120,815.80
  6. Step 6: Final answer
    x = 79,905.56

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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.