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Finding the Fourth Proportional to 130,331.94, 179,874.86 and 72,993.04

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Solution

The fourth proportional to 130,331.94, 179,874.86 and 72,993.04 is: 100,739.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,331.94 : 179,874.86 = 72,993.04 : x
  2. Step 2: Convert to fraction form
    130,331.94/179,874.86 = 72,993.04/x
  3. Step 3: Cross multiply
    130,331.94x = 179,874.86 × 72,993.04
  4. Step 4: Simplify right side
    130,331.94x = 13,129,612,850.97
  5. Step 5: Solve for x
    x = 13,129,612,850.97/130,331.94
  6. Step 6: Final answer
    x = 100,739.79

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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.