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Finding the Fourth Proportional to 187,073.28, 280,720.56 and 68,827.60

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Solution

The fourth proportional to 187,073.28, 280,720.56 and 68,827.60 is: 103,282.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,073.28 : 280,720.56 = 68,827.60 : x
  2. Step 2: Convert to fraction form
    187,073.28/280,720.56 = 68,827.60/x
  3. Step 3: Cross multiply
    187,073.28x = 280,720.56 × 68,827.60
  4. Step 4: Simplify right side
    187,073.28x = 19,321,322,415.46
  5. Step 5: Solve for x
    x = 19,321,322,415.46/187,073.28
  6. Step 6: Final answer
    x = 103,282.11

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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.