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Finding the Fourth Proportional to 129,754.78, 194,640.40 and 54,860.96

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Solution

The fourth proportional to 129,754.78, 194,640.40 and 54,860.96 is: 82,294.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,754.78 : 194,640.40 = 54,860.96 : x
  2. Step 2: Convert to fraction form
    129,754.78/194,640.40 = 54,860.96/x
  3. Step 3: Cross multiply
    129,754.78x = 194,640.40 × 54,860.96
  4. Step 4: Simplify right side
    129,754.78x = 10,678,159,753.96
  5. Step 5: Solve for x
    x = 10,678,159,753.96/129,754.78
  6. Step 6: Final answer
    x = 82,294.93

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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.