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Finding the Fourth Proportional to 148,502.80, 222,754.20 and 138,005.20

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Solution

The fourth proportional to 148,502.80, 222,754.20 and 138,005.20 is: 207,007.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,502.80 : 222,754.20 = 138,005.20 : x
  2. Step 2: Convert to fraction form
    148,502.80/222,754.20 = 138,005.20/x
  3. Step 3: Cross multiply
    148,502.80x = 222,754.20 × 138,005.20
  4. Step 4: Simplify right side
    148,502.80x = 30,741,237,921.84
  5. Step 5: Solve for x
    x = 30,741,237,921.84/148,502.80
  6. Step 6: Final answer
    x = 207,007.80

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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.