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Finding the Fourth Proportional to 133,321.70, 199,909.65 and 54,346.70

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Solution

The fourth proportional to 133,321.70, 199,909.65 and 54,346.70 is: 81,490.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,321.70 : 199,909.65 = 54,346.70 : x
  2. Step 2: Convert to fraction form
    133,321.70/199,909.65 = 54,346.70/x
  3. Step 3: Cross multiply
    133,321.70x = 199,909.65 × 54,346.70
  4. Step 4: Simplify right side
    133,321.70x = 10,864,429,775.66
  5. Step 5: Solve for x
    x = 10,864,429,775.66/133,321.70
  6. Step 6: Final answer
    x = 81,490.33

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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.