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Finding the Fourth Proportional to 148,503.80, 222,755.70 and 138,006.20

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Solution

The fourth proportional to 148,503.80, 222,755.70 and 138,006.20 is: 207,009.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,503.80 : 222,755.70 = 138,006.20 : x
  2. Step 2: Convert to fraction form
    148,503.80/222,755.70 = 138,006.20/x
  3. Step 3: Cross multiply
    148,503.80x = 222,755.70 × 138,006.20
  4. Step 4: Simplify right side
    148,503.80x = 30,741,667,685.34
  5. Step 5: Solve for x
    x = 30,741,667,685.34/148,503.80
  6. Step 6: Final answer
    x = 207,009.30

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1.5x scale

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.