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Finding the Fourth Proportional to 135,929.80, 203,894.70 and 36,105.40

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Solution

The fourth proportional to 135,929.80, 203,894.70 and 36,105.40 is: 54,158.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,929.80 : 203,894.70 = 36,105.40 : x
  2. Step 2: Convert to fraction form
    135,929.80/203,894.70 = 36,105.40/x
  3. Step 3: Cross multiply
    135,929.80x = 203,894.70 × 36,105.40
  4. Step 4: Simplify right side
    135,929.80x = 7,361,699,701.38
  5. Step 5: Solve for x
    x = 7,361,699,701.38/135,929.80
  6. Step 6: Final answer
    x = 54,158.10

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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.