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Finding the Fourth Proportional to 200,707.80, 301,061.70 and 126,058.20

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Solution

The fourth proportional to 200,707.80, 301,061.70 and 126,058.20 is: 189,087.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,707.80 : 301,061.70 = 126,058.20 : x
  2. Step 2: Convert to fraction form
    200,707.80/301,061.70 = 126,058.20/x
  3. Step 3: Cross multiply
    200,707.80x = 301,061.70 × 126,058.20
  4. Step 4: Simplify right side
    200,707.80x = 37,951,295,990.94
  5. Step 5: Solve for x
    x = 37,951,295,990.94/200,707.80
  6. Step 6: Final answer
    x = 189,087.30

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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.