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Finding the Fourth Proportional to 141,134, 211,701 and 42,638

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Solution

The fourth proportional to 141,134, 211,701 and 42,638 is: 63,957

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,134 : 211,701 = 42,638 : x
  2. Step 2: Convert to fraction form
    141,134/211,701 = 42,638/x
  3. Step 3: Cross multiply
    141,134x = 211,701 × 42,638
  4. Step 4: Simplify right side
    141,134x = 9,026,507,238
  5. Step 5: Solve for x
    x = 9,026,507,238/141,134
  6. Step 6: Final answer
    x = 63,957

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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.