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Finding the Fourth Proportional to 135,568.80, 203,468.40 and 109,303.20

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Solution

The fourth proportional to 135,568.80, 203,468.40 and 109,303.20 is: 164,047.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,568.80 : 203,468.40 = 109,303.20 : x
  2. Step 2: Convert to fraction form
    135,568.80/203,468.40 = 109,303.20/x
  3. Step 3: Cross multiply
    135,568.80x = 203,468.40 × 109,303.20
  4. Step 4: Simplify right side
    135,568.80x = 22,239,747,218.88
  5. Step 5: Solve for x
    x = 22,239,747,218.88/135,568.80
  6. Step 6: Final answer
    x = 164,047.68

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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.