Home / 120,256.06-165,942.07-81,414.88

Finding the Fourth Proportional to 120,256.06, 165,942.07 and 81,414.88

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Solution

The fourth proportional to 120,256.06, 165,942.07 and 81,414.88 is: 112,344.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,256.06 : 165,942.07 = 81,414.88 : x
  2. Step 2: Convert to fraction form
    120,256.06/165,942.07 = 81,414.88/x
  3. Step 3: Cross multiply
    120,256.06x = 165,942.07 × 81,414.88
  4. Step 4: Simplify right side
    120,256.06x = 13,510,153,039.27
  5. Step 5: Solve for x
    x = 13,510,153,039.27/120,256.06
  6. Step 6: Final answer
    x = 112,344.88

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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.