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Finding the Fourth Proportional to 135,913.80, 203,870.70 and 82,769.70

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Solution

The fourth proportional to 135,913.80, 203,870.70 and 82,769.70 is: 124,154.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,913.80 : 203,870.70 = 82,769.70 : x
  2. Step 2: Convert to fraction form
    135,913.80/203,870.70 = 82,769.70/x
  3. Step 3: Cross multiply
    135,913.80x = 203,870.70 × 82,769.70
  4. Step 4: Simplify right side
    135,913.80x = 16,874,316,677.79
  5. Step 5: Solve for x
    x = 16,874,316,677.79/135,913.80
  6. Step 6: Final answer
    x = 124,154.55

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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.