Home / 135,311.20-202,979.60-36,815.20

Finding the Fourth Proportional to 135,311.20, 202,979.60 and 36,815.20

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Solution

The fourth proportional to 135,311.20, 202,979.60 and 36,815.20 is: 55,226.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,311.20 : 202,979.60 = 36,815.20 : x
  2. Step 2: Convert to fraction form
    135,311.20/202,979.60 = 36,815.20/x
  3. Step 3: Cross multiply
    135,311.20x = 202,979.60 × 36,815.20
  4. Step 4: Simplify right side
    135,311.20x = 7,472,734,569.92
  5. Step 5: Solve for x
    x = 7,472,734,569.92/135,311.20
  6. Step 6: Final answer
    x = 55,226.28

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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.