Home / 120,902.20-181,353.30-61,853.20

Finding the Fourth Proportional to 120,902.20, 181,353.30 and 61,853.20

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Solution

The fourth proportional to 120,902.20, 181,353.30 and 61,853.20 is: 92,779.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,902.20 : 181,353.30 = 61,853.20 : x
  2. Step 2: Convert to fraction form
    120,902.20/181,353.30 = 61,853.20/x
  3. Step 3: Cross multiply
    120,902.20x = 181,353.30 × 61,853.20
  4. Step 4: Simplify right side
    120,902.20x = 11,217,281,935.56
  5. Step 5: Solve for x
    x = 11,217,281,935.56/120,902.20
  6. Step 6: Final answer
    x = 92,779.80

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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.