Home / 137,961.28-206,980.08-54,913.60

Finding the Fourth Proportional to 137,961.28, 206,980.08 and 54,913.60

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Solution

The fourth proportional to 137,961.28, 206,980.08 and 54,913.60 is: 82,385.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,961.28 : 206,980.08 = 54,913.60 : x
  2. Step 2: Convert to fraction form
    137,961.28/206,980.08 = 54,913.60/x
  3. Step 3: Cross multiply
    137,961.28x = 206,980.08 × 54,913.60
  4. Step 4: Simplify right side
    137,961.28x = 11,366,021,321.09
  5. Step 5: Solve for x
    x = 11,366,021,321.09/137,961.28
  6. Step 6: Final answer
    x = 82,385.59

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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.