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Finding the Fourth Proportional to 140,439.28, 210,616.08 and 73,843.28

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Solution

The fourth proportional to 140,439.28, 210,616.08 and 73,843.28 is: 110,742.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,439.28 : 210,616.08 = 73,843.28 : x
  2. Step 2: Convert to fraction form
    140,439.28/210,616.08 = 73,843.28/x
  3. Step 3: Cross multiply
    140,439.28x = 210,616.08 × 73,843.28
  4. Step 4: Simplify right side
    140,439.28x = 15,552,582,167.94
  5. Step 5: Solve for x
    x = 15,552,582,167.94/140,439.28
  6. Step 6: Final answer
    x = 110,742.39

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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.