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Finding the Fourth Proportional to 141,753.70, 212,556.71 and 66,853.70

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Solution

The fourth proportional to 141,753.70, 212,556.71 and 66,853.70 is: 100,245.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,753.70 : 212,556.71 = 66,853.70 : x
  2. Step 2: Convert to fraction form
    141,753.70/212,556.71 = 66,853.70/x
  3. Step 3: Cross multiply
    141,753.70x = 212,556.71 × 66,853.70
  4. Step 4: Simplify right side
    141,753.70x = 14,210,203,244.34
  5. Step 5: Solve for x
    x = 14,210,203,244.34/141,753.70
  6. Step 6: Final answer
    x = 100,245.73

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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.