Home / 120,216.72-180,354.60-84,747.36

Finding the Fourth Proportional to 120,216.72, 180,354.60 and 84,747.36

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Solution

The fourth proportional to 120,216.72, 180,354.60 and 84,747.36 is: 127,141.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,216.72 : 180,354.60 = 84,747.36 : x
  2. Step 2: Convert to fraction form
    120,216.72/180,354.60 = 84,747.36/x
  3. Step 3: Cross multiply
    120,216.72x = 180,354.60 × 84,747.36
  4. Step 4: Simplify right side
    120,216.72x = 15,284,576,213.86
  5. Step 5: Solve for x
    x = 15,284,576,213.86/120,216.72
  6. Step 6: Final answer
    x = 127,141.85

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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.