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Finding the Fourth Proportional to 163,988.20, 245,982.30 and 137,744.20

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Solution

The fourth proportional to 163,988.20, 245,982.30 and 137,744.20 is: 206,616.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,988.20 : 245,982.30 = 137,744.20 : x
  2. Step 2: Convert to fraction form
    163,988.20/245,982.30 = 137,744.20/x
  3. Step 3: Cross multiply
    163,988.20x = 245,982.30 × 137,744.20
  4. Step 4: Simplify right side
    163,988.20x = 33,882,635,127.66
  5. Step 5: Solve for x
    x = 33,882,635,127.66/163,988.20
  6. Step 6: Final answer
    x = 206,616.30

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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.