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Finding the Fourth Proportional to 192,089.28, 287,936.88 and 73,728.72

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Solution

The fourth proportional to 192,089.28, 287,936.88 and 73,728.72 is: 110,517.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,089.28 : 287,936.88 = 73,728.72 : x
  2. Step 2: Convert to fraction form
    192,089.28/287,936.88 = 73,728.72/x
  3. Step 3: Cross multiply
    192,089.28x = 287,936.88 × 73,728.72
  4. Step 4: Simplify right side
    192,089.28x = 21,229,217,603.19
  5. Step 5: Solve for x
    x = 21,229,217,603.19/192,089.28
  6. Step 6: Final answer
    x = 110,517.45

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1.5x scale

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.