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Finding the Fourth Proportional to 206,579, 285,127.62 and 126,073.12

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Solution

The fourth proportional to 206,579, 285,127.62 and 126,073.12 is: 174,010.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,579 : 285,127.62 = 126,073.12 : x
  2. Step 2: Convert to fraction form
    206,579/285,127.62 = 126,073.12/x
  3. Step 3: Cross multiply
    206,579x = 285,127.62 × 126,073.12
  4. Step 4: Simplify right side
    206,579x = 35,946,928,651.57
  5. Step 5: Solve for x
    x = 35,946,928,651.57/206,579
  6. Step 6: Final answer
    x = 174,010.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.