Home / 120,277.38-180,478.32-87,269.88

Finding the Fourth Proportional to 120,277.38, 180,478.32 and 87,269.88

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Solution

The fourth proportional to 120,277.38, 180,478.32 and 87,269.88 is: 130,949.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,277.38 : 180,478.32 = 87,269.88 : x
  2. Step 2: Convert to fraction form
    120,277.38/180,478.32 = 87,269.88/x
  3. Step 3: Cross multiply
    120,277.38x = 180,478.32 × 87,269.88
  4. Step 4: Simplify right side
    120,277.38x = 15,750,321,329.00
  5. Step 5: Solve for x
    x = 15,750,321,329.00/120,277.38
  6. Step 6: Final answer
    x = 130,949.99

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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.