Home / 137,480.40-206,220.60-90,241.20

Finding the Fourth Proportional to 137,480.40, 206,220.60 and 90,241.20

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Solution

The fourth proportional to 137,480.40, 206,220.60 and 90,241.20 is: 135,361.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,480.40 : 206,220.60 = 90,241.20 : x
  2. Step 2: Convert to fraction form
    137,480.40/206,220.60 = 90,241.20/x
  3. Step 3: Cross multiply
    137,480.40x = 206,220.60 × 90,241.20
  4. Step 4: Simplify right side
    137,480.40x = 18,609,594,408.72
  5. Step 5: Solve for x
    x = 18,609,594,408.72/137,480.40
  6. Step 6: Final answer
    x = 135,361.80

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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.