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Finding the Fourth Proportional to 133,358.66, 199,833.48 and 90,609.65

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Solution

The fourth proportional to 133,358.66, 199,833.48 and 90,609.65 is: 135,775.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,358.66 : 199,833.48 = 90,609.65 : x
  2. Step 2: Convert to fraction form
    133,358.66/199,833.48 = 90,609.65/x
  3. Step 3: Cross multiply
    133,358.66x = 199,833.48 × 90,609.65
  4. Step 4: Simplify right side
    133,358.66x = 18,106,841,091.50
  5. Step 5: Solve for x
    x = 18,106,841,091.50/133,358.66
  6. Step 6: Final answer
    x = 135,775.51

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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.