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Finding the Fourth Proportional to 147,072.80, 220,609.20 and 123,744.80

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Solution

The fourth proportional to 147,072.80, 220,609.20 and 123,744.80 is: 185,617.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,072.80 : 220,609.20 = 123,744.80 : x
  2. Step 2: Convert to fraction form
    147,072.80/220,609.20 = 123,744.80/x
  3. Step 3: Cross multiply
    147,072.80x = 220,609.20 × 123,744.80
  4. Step 4: Simplify right side
    147,072.80x = 27,299,241,332.16
  5. Step 5: Solve for x
    x = 27,299,241,332.16/147,072.80
  6. Step 6: Final answer
    x = 185,617.20

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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.