Home / 120,846.30-181,269.45-78,855.90

Finding the Fourth Proportional to 120,846.30, 181,269.45 and 78,855.90

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Solution

The fourth proportional to 120,846.30, 181,269.45 and 78,855.90 is: 118,283.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,846.30 : 181,269.45 = 78,855.90 : x
  2. Step 2: Convert to fraction form
    120,846.30/181,269.45 = 78,855.90/x
  3. Step 3: Cross multiply
    120,846.30x = 181,269.45 × 78,855.90
  4. Step 4: Simplify right side
    120,846.30x = 14,294,165,622.26
  5. Step 5: Solve for x
    x = 14,294,165,622.26/120,846.30
  6. Step 6: Final answer
    x = 118,283.85

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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.