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Finding the Fourth Proportional to 151,881.92, 209,509.44 and 91,410.56

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Solution

The fourth proportional to 151,881.92, 209,509.44 and 91,410.56 is: 126,093.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,881.92 : 209,509.44 = 91,410.56 : x
  2. Step 2: Convert to fraction form
    151,881.92/209,509.44 = 91,410.56/x
  3. Step 3: Cross multiply
    151,881.92x = 209,509.44 × 91,410.56
  4. Step 4: Simplify right side
    151,881.92x = 19,151,375,235.69
  5. Step 5: Solve for x
    x = 19,151,375,235.69/151,881.92
  6. Step 6: Final answer
    x = 126,093.84

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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.