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Finding the Fourth Proportional to 141,213.88, 194,876.50 and 77,553

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Solution

The fourth proportional to 141,213.88, 194,876.50 and 77,553 is: 107,023.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,213.88 : 194,876.50 = 77,553 : x
  2. Step 2: Convert to fraction form
    141,213.88/194,876.50 = 77,553/x
  3. Step 3: Cross multiply
    141,213.88x = 194,876.50 × 77,553
  4. Step 4: Simplify right side
    141,213.88x = 15,113,257,204.50
  5. Step 5: Solve for x
    x = 15,113,257,204.50/141,213.88
  6. Step 6: Final answer
    x = 107,023.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.