Home / 149,451.60-206,236.96-81,467.08

Finding the Fourth Proportional to 149,451.60, 206,236.96 and 81,467.08

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Solution

The fourth proportional to 149,451.60, 206,236.96 and 81,467.08 is: 112,421.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,451.60 : 206,236.96 = 81,467.08 : x
  2. Step 2: Convert to fraction form
    149,451.60/206,236.96 = 81,467.08/x
  3. Step 3: Cross multiply
    149,451.60x = 206,236.96 × 81,467.08
  4. Step 4: Simplify right side
    149,451.60x = 16,801,522,919.28
  5. Step 5: Solve for x
    x = 16,801,522,919.28/149,451.60
  6. Step 6: Final answer
    x = 112,421.16

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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.