Home / 137,630.56-206,637-71,119.84

Finding the Fourth Proportional to 137,630.56, 206,637 and 71,119.84

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Solution

The fourth proportional to 137,630.56, 206,637 and 71,119.84 is: 106,778.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,630.56 : 206,637 = 71,119.84 : x
  2. Step 2: Convert to fraction form
    137,630.56/206,637 = 71,119.84/x
  3. Step 3: Cross multiply
    137,630.56x = 206,637 × 71,119.84
  4. Step 4: Simplify right side
    137,630.56x = 14,695,990,378.08
  5. Step 5: Solve for x
    x = 14,695,990,378.08/137,630.56
  6. Step 6: Final answer
    x = 106,778.54

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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.