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Finding the Fourth Proportional to 133,769.80, 200,669.10 and 45,019.72

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Solution

The fourth proportional to 133,769.80, 200,669.10 and 45,019.72 is: 67,534.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,769.80 : 200,669.10 = 45,019.72 : x
  2. Step 2: Convert to fraction form
    133,769.80/200,669.10 = 45,019.72/x
  3. Step 3: Cross multiply
    133,769.80x = 200,669.10 × 45,019.72
  4. Step 4: Simplify right side
    133,769.80x = 9,034,066,694.65
  5. Step 5: Solve for x
    x = 9,034,066,694.65/133,769.80
  6. Step 6: Final answer
    x = 67,534.43

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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.