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Finding the Fourth Proportional to 169,321.76, 233,705.76 and 100,469.60

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Solution

The fourth proportional to 169,321.76, 233,705.76 and 100,469.60 is: 138,672.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,321.76 : 233,705.76 = 100,469.60 : x
  2. Step 2: Convert to fraction form
    169,321.76/233,705.76 = 100,469.60/x
  3. Step 3: Cross multiply
    169,321.76x = 233,705.76 × 100,469.60
  4. Step 4: Simplify right side
    169,321.76x = 23,480,324,224.90
  5. Step 5: Solve for x
    x = 23,480,324,224.90/169,321.76
  6. Step 6: Final answer
    x = 138,672.81

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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.