Home / 149,292.96-206,020.16-81,308.44

Finding the Fourth Proportional to 149,292.96, 206,020.16 and 81,308.44

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Solution

The fourth proportional to 149,292.96, 206,020.16 and 81,308.44 is: 112,203.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,292.96 : 206,020.16 = 81,308.44 : x
  2. Step 2: Convert to fraction form
    149,292.96/206,020.16 = 81,308.44/x
  3. Step 3: Cross multiply
    149,292.96x = 206,020.16 × 81,308.44
  4. Step 4: Simplify right side
    149,292.96x = 16,751,177,974.04
  5. Step 5: Solve for x
    x = 16,751,177,974.04/149,292.96
  6. Step 6: Final answer
    x = 112,203.40

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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.