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Finding the Fourth Proportional to 133,382.70, 199,581.98 and 121,572.90

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Solution

The fourth proportional to 133,382.70, 199,581.98 and 121,572.90 is: 181,910.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,382.70 : 199,581.98 = 121,572.90 : x
  2. Step 2: Convert to fraction form
    133,382.70/199,581.98 = 121,572.90/x
  3. Step 3: Cross multiply
    133,382.70x = 199,581.98 × 121,572.90
  4. Step 4: Simplify right side
    133,382.70x = 24,263,759,488.48
  5. Step 5: Solve for x
    x = 24,263,759,488.48/133,382.70
  6. Step 6: Final answer
    x = 181,910.84

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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.