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Finding the Fourth Proportional to 126,376.64, 189,430.09 and 63,072.10

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Solution

The fourth proportional to 126,376.64, 189,430.09 and 63,072.10 is: 94,540.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,376.64 : 189,430.09 = 63,072.10 : x
  2. Step 2: Convert to fraction form
    126,376.64/189,430.09 = 63,072.10/x
  3. Step 3: Cross multiply
    126,376.64x = 189,430.09 × 63,072.10
  4. Step 4: Simplify right side
    126,376.64x = 11,947,753,579.49
  5. Step 5: Solve for x
    x = 11,947,753,579.49/126,376.64
  6. Step 6: Final answer
    x = 94,540.84

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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.