Home / 149,288.54-206,020.40-81,308.66

Finding the Fourth Proportional to 149,288.54, 206,020.40 and 81,308.66

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Solution

The fourth proportional to 149,288.54, 206,020.40 and 81,308.66 is: 112,207.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,288.54 : 206,020.40 = 81,308.66 : x
  2. Step 2: Convert to fraction form
    149,288.54/206,020.40 = 81,308.66/x
  3. Step 3: Cross multiply
    149,288.54x = 206,020.40 × 81,308.66
  4. Step 4: Simplify right side
    149,288.54x = 16,751,241,220.02
  5. Step 5: Solve for x
    x = 16,751,241,220.02/149,288.54
  6. Step 6: Final answer
    x = 112,207.15

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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.