Home / 137,743.70-206,396.85-90,941.90

Finding the Fourth Proportional to 137,743.70, 206,396.85 and 90,941.90

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Solution

The fourth proportional to 137,743.70, 206,396.85 and 90,941.90 is: 136,268.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,743.70 : 206,396.85 = 90,941.90 : x
  2. Step 2: Convert to fraction form
    137,743.70/206,396.85 = 90,941.90/x
  3. Step 3: Cross multiply
    137,743.70x = 206,396.85 × 90,941.90
  4. Step 4: Simplify right side
    137,743.70x = 18,770,121,693.02
  5. Step 5: Solve for x
    x = 18,770,121,693.02/137,743.70
  6. Step 6: Final answer
    x = 136,268.46

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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.