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Finding the Fourth Proportional to 126,591.30, 189,848.64 and 42,329.82

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Solution

The fourth proportional to 126,591.30, 189,848.64 and 42,329.82 is: 63,481.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,591.30 : 189,848.64 = 42,329.82 : x
  2. Step 2: Convert to fraction form
    126,591.30/189,848.64 = 42,329.82/x
  3. Step 3: Cross multiply
    126,591.30x = 189,848.64 × 42,329.82
  4. Step 4: Simplify right side
    126,591.30x = 8,036,258,758.44
  5. Step 5: Solve for x
    x = 8,036,258,758.44/126,591.30
  6. Step 6: Final answer
    x = 63,481.92

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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.