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Finding the Fourth Proportional to 151,380.44, 208,905.08 and 87,755.20

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Solution

The fourth proportional to 151,380.44, 208,905.08 and 87,755.20 is: 121,102.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,380.44 : 208,905.08 = 87,755.20 : x
  2. Step 2: Convert to fraction form
    151,380.44/208,905.08 = 87,755.20/x
  3. Step 3: Cross multiply
    151,380.44x = 208,905.08 × 87,755.20
  4. Step 4: Simplify right side
    151,380.44x = 18,332,507,076.42
  5. Step 5: Solve for x
    x = 18,332,507,076.42/151,380.44
  6. Step 6: Final answer
    x = 121,102.22

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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.