Home / 149,360.28-206,119.56-81,380.46

Finding the Fourth Proportional to 149,360.28, 206,119.56 and 81,380.46

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Solution

The fourth proportional to 149,360.28, 206,119.56 and 81,380.46 is: 112,306.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,360.28 : 206,119.56 = 81,380.46 : x
  2. Step 2: Convert to fraction form
    149,360.28/206,119.56 = 81,380.46/x
  3. Step 3: Cross multiply
    149,360.28x = 206,119.56 × 81,380.46
  4. Step 4: Simplify right side
    149,360.28x = 16,774,104,607.80
  5. Step 5: Solve for x
    x = 16,774,104,607.80/149,360.28
  6. Step 6: Final answer
    x = 112,306.33

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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.