Home / 133,948.10-200,630.55-81,265.70

Finding the Fourth Proportional to 133,948.10, 200,630.55 and 81,265.70

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Solution

The fourth proportional to 133,948.10, 200,630.55 and 81,265.70 is: 121,721.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,948.10 : 200,630.55 = 81,265.70 : x
  2. Step 2: Convert to fraction form
    133,948.10/200,630.55 = 81,265.70/x
  3. Step 3: Cross multiply
    133,948.10x = 200,630.55 × 81,265.70
  4. Step 4: Simplify right side
    133,948.10x = 16,304,382,087.14
  5. Step 5: Solve for x
    x = 16,304,382,087.14/133,948.10
  6. Step 6: Final answer
    x = 121,721.64

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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.