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Finding the Fourth Proportional to 149,716.45, 206,629.50 and 86,052.88

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Solution

The fourth proportional to 149,716.45, 206,629.50 and 86,052.88 is: 118,764.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,716.45 : 206,629.50 = 86,052.88 : x
  2. Step 2: Convert to fraction form
    149,716.45/206,629.50 = 86,052.88/x
  3. Step 3: Cross multiply
    149,716.45x = 206,629.50 × 86,052.88
  4. Step 4: Simplify right side
    149,716.45x = 17,781,063,567.96
  5. Step 5: Solve for x
    x = 17,781,063,567.96/149,716.45
  6. Step 6: Final answer
    x = 118,764.93

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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.