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Finding the Fourth Proportional to 103,165.78, 141,441.61 and 101,299.54

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Solution

The fourth proportional to 103,165.78, 141,441.61 and 101,299.54 is: 138,882.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,165.78 : 141,441.61 = 101,299.54 : x
  2. Step 2: Convert to fraction form
    103,165.78/141,441.61 = 101,299.54/x
  3. Step 3: Cross multiply
    103,165.78x = 141,441.61 × 101,299.54
  4. Step 4: Simplify right side
    103,165.78x = 14,327,970,029.86
  5. Step 5: Solve for x
    x = 14,327,970,029.86/103,165.78
  6. Step 6: Final answer
    x = 138,882.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.