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Finding the Fourth Proportional to 141,108, 211,662 and 42,612

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Solution

The fourth proportional to 141,108, 211,662 and 42,612 is: 63,918

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,108 : 211,662 = 42,612 : x
  2. Step 2: Convert to fraction form
    141,108/211,662 = 42,612/x
  3. Step 3: Cross multiply
    141,108x = 211,662 × 42,612
  4. Step 4: Simplify right side
    141,108x = 9,019,341,144
  5. Step 5: Solve for x
    x = 9,019,341,144/141,108
  6. Step 6: Final answer
    x = 63,918

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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.