Home / 102,249.68-141,155.46-79,227.86

Finding the Fourth Proportional to 102,249.68, 141,155.46 and 79,227.86

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Solution

The fourth proportional to 102,249.68, 141,155.46 and 79,227.86 is: 109,373.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,249.68 : 141,155.46 = 79,227.86 : x
  2. Step 2: Convert to fraction form
    102,249.68/141,155.46 = 79,227.86/x
  3. Step 3: Cross multiply
    102,249.68x = 141,155.46 × 79,227.86
  4. Step 4: Simplify right side
    102,249.68x = 11,183,444,317.34
  5. Step 5: Solve for x
    x = 11,183,444,317.34/102,249.68
  6. Step 6: Final answer
    x = 109,373.89

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1.5x scale

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.