Home / 149,380.06-206,141.85-81,397.57

Finding the Fourth Proportional to 149,380.06, 206,141.85 and 81,397.57

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Solution

The fourth proportional to 149,380.06, 206,141.85 and 81,397.57 is: 112,327.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,380.06 : 206,141.85 = 81,397.57 : x
  2. Step 2: Convert to fraction form
    149,380.06/206,141.85 = 81,397.57/x
  3. Step 3: Cross multiply
    149,380.06x = 206,141.85 × 81,397.57
  4. Step 4: Simplify right side
    149,380.06x = 16,779,445,665.30
  5. Step 5: Solve for x
    x = 16,779,445,665.30/149,380.06
  6. Step 6: Final answer
    x = 112,327.21

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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.