Home / 137,905.90-206,858.85-131,490.70

Finding the Fourth Proportional to 137,905.90, 206,858.85 and 131,490.70

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Solution

The fourth proportional to 137,905.90, 206,858.85 and 131,490.70 is: 197,236.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,905.90 : 206,858.85 = 131,490.70 : x
  2. Step 2: Convert to fraction form
    137,905.90/206,858.85 = 131,490.70/x
  3. Step 3: Cross multiply
    137,905.90x = 206,858.85 × 131,490.70
  4. Step 4: Simplify right side
    137,905.90x = 27,200,014,987.70
  5. Step 5: Solve for x
    x = 27,200,014,987.70/137,905.90
  6. Step 6: Final answer
    x = 197,236.05

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1.5x scale

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.