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Finding the Fourth Proportional to 149,793.37, 206,650.65 and 86,117.65

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Solution

The fourth proportional to 149,793.37, 206,650.65 and 86,117.65 is: 118,805.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,793.37 : 206,650.65 = 86,117.65 : x
  2. Step 2: Convert to fraction form
    149,793.37/206,650.65 = 86,117.65/x
  3. Step 3: Cross multiply
    149,793.37x = 206,650.65 × 86,117.65
  4. Step 4: Simplify right side
    149,793.37x = 17,796,268,348.97
  5. Step 5: Solve for x
    x = 17,796,268,348.97/149,793.37
  6. Step 6: Final answer
    x = 118,805.45

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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.