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Finding the Fourth Proportional to 133,480.68, 200,013.66 and 84,129

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Solution

The fourth proportional to 133,480.68, 200,013.66 and 84,129 is: 126,062.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,480.68 : 200,013.66 = 84,129 : x
  2. Step 2: Convert to fraction form
    133,480.68/200,013.66 = 84,129/x
  3. Step 3: Cross multiply
    133,480.68x = 200,013.66 × 84,129
  4. Step 4: Simplify right side
    133,480.68x = 16,826,949,202.14
  5. Step 5: Solve for x
    x = 16,826,949,202.14/133,480.68
  6. Step 6: Final answer
    x = 126,062.81

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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.