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Finding the Fourth Proportional to 133,086.70, 199,630.05 and 69,882.40

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Solution

The fourth proportional to 133,086.70, 199,630.05 and 69,882.40 is: 104,823.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,086.70 : 199,630.05 = 69,882.40 : x
  2. Step 2: Convert to fraction form
    133,086.70/199,630.05 = 69,882.40/x
  3. Step 3: Cross multiply
    133,086.70x = 199,630.05 × 69,882.40
  4. Step 4: Simplify right side
    133,086.70x = 13,950,627,006.12
  5. Step 5: Solve for x
    x = 13,950,627,006.12/133,086.70
  6. Step 6: Final answer
    x = 104,823.60

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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.