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Finding the Fourth Proportional to 133,770.19, 200,686.17 and 45,021.53

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Solution

The fourth proportional to 133,770.19, 200,686.17 and 45,021.53 is: 67,542.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,770.19 : 200,686.17 = 45,021.53 : x
  2. Step 2: Convert to fraction form
    133,770.19/200,686.17 = 45,021.53/x
  3. Step 3: Cross multiply
    133,770.19x = 200,686.17 × 45,021.53
  4. Step 4: Simplify right side
    133,770.19x = 9,035,198,423.24
  5. Step 5: Solve for x
    x = 9,035,198,423.24/133,770.19
  6. Step 6: Final answer
    x = 67,542.69

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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.