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Finding the Fourth Proportional to 151,189.74, 208,664.79 and 90,793.68

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Solution

The fourth proportional to 151,189.74, 208,664.79 and 90,793.68 is: 125,309.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,189.74 : 208,664.79 = 90,793.68 : x
  2. Step 2: Convert to fraction form
    151,189.74/208,664.79 = 90,793.68/x
  3. Step 3: Cross multiply
    151,189.74x = 208,664.79 × 90,793.68
  4. Step 4: Simplify right side
    151,189.74x = 18,945,444,170.53
  5. Step 5: Solve for x
    x = 18,945,444,170.53/151,189.74
  6. Step 6: Final answer
    x = 125,309.06

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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.