Home / 149,948.31-206,928.66-81,965.57

Finding the Fourth Proportional to 149,948.31, 206,928.66 and 81,965.57

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Solution

The fourth proportional to 149,948.31, 206,928.66 and 81,965.57 is: 113,112.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,948.31 : 206,928.66 = 81,965.57 : x
  2. Step 2: Convert to fraction form
    149,948.31/206,928.66 = 81,965.57/x
  3. Step 3: Cross multiply
    149,948.31x = 206,928.66 × 81,965.57
  4. Step 4: Simplify right side
    149,948.31x = 16,961,025,566.24
  5. Step 5: Solve for x
    x = 16,961,025,566.24/149,948.31
  6. Step 6: Final answer
    x = 113,112.48

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1.5x scale

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.