Home / 149,724.66-206,611.20-81,728.13

Finding the Fourth Proportional to 149,724.66, 206,611.20 and 81,728.13

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Solution

The fourth proportional to 149,724.66, 206,611.20 and 81,728.13 is: 112,780.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,724.66 : 206,611.20 = 81,728.13 : x
  2. Step 2: Convert to fraction form
    149,724.66/206,611.20 = 81,728.13/x
  3. Step 3: Cross multiply
    149,724.66x = 206,611.20 × 81,728.13
  4. Step 4: Simplify right side
    149,724.66x = 16,885,947,013.06
  5. Step 5: Solve for x
    x = 16,885,947,013.06/149,724.66
  6. Step 6: Final answer
    x = 112,780.00

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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.