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Finding the Fourth Proportional to 179,418.80, 269,063.40 and 90,642.80

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Solution

The fourth proportional to 179,418.80, 269,063.40 and 90,642.80 is: 135,931.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,418.80 : 269,063.40 = 90,642.80 : x
  2. Step 2: Convert to fraction form
    179,418.80/269,063.40 = 90,642.80/x
  3. Step 3: Cross multiply
    179,418.80x = 269,063.40 × 90,642.80
  4. Step 4: Simplify right side
    179,418.80x = 24,388,659,953.52
  5. Step 5: Solve for x
    x = 24,388,659,953.52/179,418.80
  6. Step 6: Final answer
    x = 135,931.46

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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.