Home / 120,780.20-180,985.56-50,621.24

Finding the Fourth Proportional to 120,780.20, 180,985.56 and 50,621.24

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Solution

The fourth proportional to 120,780.20, 180,985.56 and 50,621.24 is: 75,854.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,780.20 : 180,985.56 = 50,621.24 : x
  2. Step 2: Convert to fraction form
    120,780.20/180,985.56 = 50,621.24/x
  3. Step 3: Cross multiply
    120,780.20x = 180,985.56 × 50,621.24
  4. Step 4: Simplify right side
    120,780.20x = 9,161,713,469.29
  5. Step 5: Solve for x
    x = 9,161,713,469.29/120,780.20
  6. Step 6: Final answer
    x = 75,854.43

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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.