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Finding the Fourth Proportional to 123,609.28, 170,579.16 and 67,019.44

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Solution

The fourth proportional to 123,609.28, 170,579.16 and 67,019.44 is: 92,485.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,609.28 : 170,579.16 = 67,019.44 : x
  2. Step 2: Convert to fraction form
    123,609.28/170,579.16 = 67,019.44/x
  3. Step 3: Cross multiply
    123,609.28x = 170,579.16 × 67,019.44
  4. Step 4: Simplify right side
    123,609.28x = 11,432,119,778.87
  5. Step 5: Solve for x
    x = 11,432,119,778.87/123,609.28
  6. Step 6: Final answer
    x = 92,485.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.