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Finding the Fourth Proportional to 154,654.92, 231,762.06 and 91,487.88

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Solution

The fourth proportional to 154,654.92, 231,762.06 and 91,487.88 is: 137,101.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,654.92 : 231,762.06 = 91,487.88 : x
  2. Step 2: Convert to fraction form
    154,654.92/231,762.06 = 91,487.88/x
  3. Step 3: Cross multiply
    154,654.92x = 231,762.06 × 91,487.88
  4. Step 4: Simplify right side
    154,654.92x = 21,203,419,533.83
  5. Step 5: Solve for x
    x = 21,203,419,533.83/154,654.92
  6. Step 6: Final answer
    x = 137,101.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.