Home / 133,345.20-200,147.40-80,857.20

Finding the Fourth Proportional to 133,345.20, 200,147.40 and 80,857.20

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Solution

The fourth proportional to 133,345.20, 200,147.40 and 80,857.20 is: 121,364.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,345.20 : 200,147.40 = 80,857.20 : x
  2. Step 2: Convert to fraction form
    133,345.20/200,147.40 = 80,857.20/x
  3. Step 3: Cross multiply
    133,345.20x = 200,147.40 × 80,857.20
  4. Step 4: Simplify right side
    133,345.20x = 16,183,358,351.28
  5. Step 5: Solve for x
    x = 16,183,358,351.28/133,345.20
  6. Step 6: Final answer
    x = 121,364.39

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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.