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Finding the Fourth Proportional to 133,999.89, 200,969.14 and 79,979.81

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Solution

The fourth proportional to 133,999.89, 200,969.14 and 79,979.81 is: 119,951.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,999.89 : 200,969.14 = 79,979.81 : x
  2. Step 2: Convert to fraction form
    133,999.89/200,969.14 = 79,979.81/x
  3. Step 3: Cross multiply
    133,999.89x = 200,969.14 × 79,979.81
  4. Step 4: Simplify right side
    133,999.89x = 16,073,474,235.46
  5. Step 5: Solve for x
    x = 16,073,474,235.46/133,999.89
  6. Step 6: Final answer
    x = 119,951.40

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1.5x scale

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.