Home / 137,729.40-206,156.70-127,231.80

Finding the Fourth Proportional to 137,729.40, 206,156.70 and 127,231.80

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Solution

The fourth proportional to 137,729.40, 206,156.70 and 127,231.80 is: 190,443.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,729.40 : 206,156.70 = 127,231.80 : x
  2. Step 2: Convert to fraction form
    137,729.40/206,156.70 = 127,231.80/x
  3. Step 3: Cross multiply
    137,729.40x = 206,156.70 × 127,231.80
  4. Step 4: Simplify right side
    137,729.40x = 26,229,688,023.06
  5. Step 5: Solve for x
    x = 26,229,688,023.06/137,729.40
  6. Step 6: Final answer
    x = 190,443.64

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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.