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Finding the Fourth Proportional to 149,832.48, 206,778.48 and 86,168.88

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Solution

The fourth proportional to 149,832.48, 206,778.48 and 86,168.88 is: 118,918.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,832.48 : 206,778.48 = 86,168.88 : x
  2. Step 2: Convert to fraction form
    149,832.48/206,778.48 = 86,168.88/x
  3. Step 3: Cross multiply
    149,832.48x = 206,778.48 × 86,168.88
  4. Step 4: Simplify right side
    149,832.48x = 17,817,870,029.70
  5. Step 5: Solve for x
    x = 17,817,870,029.70/149,832.48
  6. Step 6: Final answer
    x = 118,918.61

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1.5x scale

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.