Home / 149,648.25-206,515.79-81,665.76

Finding the Fourth Proportional to 149,648.25, 206,515.79 and 81,665.76

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Solution

The fourth proportional to 149,648.25, 206,515.79 and 81,665.76 is: 112,699.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,648.25 : 206,515.79 = 81,665.76 : x
  2. Step 2: Convert to fraction form
    149,648.25/206,515.79 = 81,665.76/x
  3. Step 3: Cross multiply
    149,648.25x = 206,515.79 × 81,665.76
  4. Step 4: Simplify right side
    149,648.25x = 16,865,268,942.35
  5. Step 5: Solve for x
    x = 16,865,268,942.35/149,648.25
  6. Step 6: Final answer
    x = 112,699.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.