Home / 149,643.46-206,512.38-81,664.84

Finding the Fourth Proportional to 149,643.46, 206,512.38 and 81,664.84

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Solution

The fourth proportional to 149,643.46, 206,512.38 and 81,664.84 is: 112,699.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,643.46 : 206,512.38 = 81,664.84 : x
  2. Step 2: Convert to fraction form
    149,643.46/206,512.38 = 81,664.84/x
  3. Step 3: Cross multiply
    149,643.46x = 206,512.38 × 81,664.84
  4. Step 4: Simplify right side
    149,643.46x = 16,864,799,954.44
  5. Step 5: Solve for x
    x = 16,864,799,954.44/149,643.46
  6. Step 6: Final answer
    x = 112,699.88

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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.