Home / 108,664.32-149,963.04-81,758.88

Finding the Fourth Proportional to 108,664.32, 149,963.04 and 81,758.88

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Solution

The fourth proportional to 108,664.32, 149,963.04 and 81,758.88 is: 112,831.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,664.32 : 149,963.04 = 81,758.88 : x
  2. Step 2: Convert to fraction form
    108,664.32/149,963.04 = 81,758.88/x
  3. Step 3: Cross multiply
    108,664.32x = 149,963.04 × 81,758.88
  4. Step 4: Simplify right side
    108,664.32x = 12,260,810,191.80
  5. Step 5: Solve for x
    x = 12,260,810,191.80/108,664.32
  6. Step 6: Final answer
    x = 112,831.98

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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.