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Finding the Fourth Proportional to 133,915.29, 200,732.78 and 45,138.11

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Solution

The fourth proportional to 133,915.29, 200,732.78 and 45,138.11 is: 67,659.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,915.29 : 200,732.78 = 45,138.11 : x
  2. Step 2: Convert to fraction form
    133,915.29/200,732.78 = 45,138.11/x
  3. Step 3: Cross multiply
    133,915.29x = 200,732.78 × 45,138.11
  4. Step 4: Simplify right side
    133,915.29x = 9,060,698,580.39
  5. Step 5: Solve for x
    x = 9,060,698,580.39/133,915.29
  6. Step 6: Final answer
    x = 67,659.92

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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.