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Finding the Fourth Proportional to 137,637.80, 206,408.10 and 48,894.20

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Solution

The fourth proportional to 137,637.80, 206,408.10 and 48,894.20 is: 73,324.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,637.80 : 206,408.10 = 48,894.20 : x
  2. Step 2: Convert to fraction form
    137,637.80/206,408.10 = 48,894.20/x
  3. Step 3: Cross multiply
    137,637.80x = 206,408.10 × 48,894.20
  4. Step 4: Simplify right side
    137,637.80x = 10,092,158,923.02
  5. Step 5: Solve for x
    x = 10,092,158,923.02/137,637.80
  6. Step 6: Final answer
    x = 73,324.04

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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.