Home / 149,945.67-206,930.55-81,967.17

Finding the Fourth Proportional to 149,945.67, 206,930.55 and 81,967.17

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Solution

The fourth proportional to 149,945.67, 206,930.55 and 81,967.17 is: 113,117.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,945.67 : 206,930.55 = 81,967.17 : x
  2. Step 2: Convert to fraction form
    149,945.67/206,930.55 = 81,967.17/x
  3. Step 3: Cross multiply
    149,945.67x = 206,930.55 × 81,967.17
  4. Step 4: Simplify right side
    149,945.67x = 16,961,511,570.04
  5. Step 5: Solve for x
    x = 16,961,511,570.04/149,945.67
  6. Step 6: Final answer
    x = 113,117.72

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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.