Home / 149,645.78-206,515.56-81,667.14

Finding the Fourth Proportional to 149,645.78, 206,515.56 and 81,667.14

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Solution

The fourth proportional to 149,645.78, 206,515.56 and 81,667.14 is: 112,703.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,645.78 : 206,515.56 = 81,667.14 : x
  2. Step 2: Convert to fraction form
    149,645.78/206,515.56 = 81,667.14/x
  3. Step 3: Cross multiply
    149,645.78x = 206,515.56 × 81,667.14
  4. Step 4: Simplify right side
    149,645.78x = 16,865,535,150.70
  5. Step 5: Solve for x
    x = 16,865,535,150.70/149,645.78
  6. Step 6: Final answer
    x = 112,703.05

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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.