Home / 137,728.25-206,149.49-71,077.60

Finding the Fourth Proportional to 137,728.25, 206,149.49 and 71,077.60

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Solution

The fourth proportional to 137,728.25, 206,149.49 and 71,077.60 is: 106,387.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,728.25 : 206,149.49 = 71,077.60 : x
  2. Step 2: Convert to fraction form
    137,728.25/206,149.49 = 71,077.60/x
  3. Step 3: Cross multiply
    137,728.25x = 206,149.49 × 71,077.60
  4. Step 4: Simplify right side
    137,728.25x = 14,652,611,159.26
  5. Step 5: Solve for x
    x = 14,652,611,159.26/137,728.25
  6. Step 6: Final answer
    x = 106,387.84

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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.