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Finding the Fourth Proportional to 133,438.76, 200,056.38 and 80,834.28

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Solution

The fourth proportional to 133,438.76, 200,056.38 and 80,834.28 is: 121,189.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,438.76 : 200,056.38 = 80,834.28 : x
  2. Step 2: Convert to fraction form
    133,438.76/200,056.38 = 80,834.28/x
  3. Step 3: Cross multiply
    133,438.76x = 200,056.38 × 80,834.28
  4. Step 4: Simplify right side
    133,438.76x = 16,171,413,436.71
  5. Step 5: Solve for x
    x = 16,171,413,436.71/133,438.76
  6. Step 6: Final answer
    x = 121,189.78

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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.