Home / 120,535.15-180,760.79-49,437.60

Finding the Fourth Proportional to 120,535.15, 180,760.79 and 49,437.60

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Solution

The fourth proportional to 120,535.15, 180,760.79 and 49,437.60 is: 74,139.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,535.15 : 180,760.79 = 49,437.60 : x
  2. Step 2: Convert to fraction form
    120,535.15/180,760.79 = 49,437.60/x
  3. Step 3: Cross multiply
    120,535.15x = 180,760.79 × 49,437.60
  4. Step 4: Simplify right side
    120,535.15x = 8,936,379,631.70
  5. Step 5: Solve for x
    x = 8,936,379,631.70/120,535.15
  6. Step 6: Final answer
    x = 74,139.20

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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.