Home / 137,723.80-206,707.20-81,493.60

Finding the Fourth Proportional to 137,723.80, 206,707.20 and 81,493.60

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Solution

The fourth proportional to 137,723.80, 206,707.20 and 81,493.60 is: 122,312.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,723.80 : 206,707.20 = 81,493.60 : x
  2. Step 2: Convert to fraction form
    137,723.80/206,707.20 = 81,493.60/x
  3. Step 3: Cross multiply
    137,723.80x = 206,707.20 × 81,493.60
  4. Step 4: Simplify right side
    137,723.80x = 16,845,313,873.92
  5. Step 5: Solve for x
    x = 16,845,313,873.92/137,723.80
  6. Step 6: Final answer
    x = 122,312.29

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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.