Home / 137,905.40-206,858.10-131,490.20

Finding the Fourth Proportional to 137,905.40, 206,858.10 and 131,490.20

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Solution

The fourth proportional to 137,905.40, 206,858.10 and 131,490.20 is: 197,235.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,905.40 : 206,858.10 = 131,490.20 : x
  2. Step 2: Convert to fraction form
    137,905.40/206,858.10 = 131,490.20/x
  3. Step 3: Cross multiply
    137,905.40x = 206,858.10 × 131,490.20
  4. Step 4: Simplify right side
    137,905.40x = 27,199,812,940.62
  5. Step 5: Solve for x
    x = 27,199,812,940.62/137,905.40
  6. Step 6: Final answer
    x = 197,235.30

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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.