Home / 149,781.35-206,699.92-81,800.33

Finding the Fourth Proportional to 149,781.35, 206,699.92 and 81,800.33

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Solution

The fourth proportional to 149,781.35, 206,699.92 and 81,800.33 is: 112,885.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,781.35 : 206,699.92 = 81,800.33 : x
  2. Step 2: Convert to fraction form
    149,781.35/206,699.92 = 81,800.33/x
  3. Step 3: Cross multiply
    149,781.35x = 206,699.92 × 81,800.33
  4. Step 4: Simplify right side
    149,781.35x = 16,908,120,428.97
  5. Step 5: Solve for x
    x = 16,908,120,428.97/149,781.35
  6. Step 6: Final answer
    x = 112,885.35

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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.