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Finding the Fourth Proportional to 165,877.92, 228,910.86 and 90,426.42

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Solution

The fourth proportional to 165,877.92, 228,910.86 and 90,426.42 is: 124,788.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,877.92 : 228,910.86 = 90,426.42 : x
  2. Step 2: Convert to fraction form
    165,877.92/228,910.86 = 90,426.42/x
  3. Step 3: Cross multiply
    165,877.92x = 228,910.86 × 90,426.42
  4. Step 4: Simplify right side
    165,877.92x = 20,699,589,568.92
  5. Step 5: Solve for x
    x = 20,699,589,568.92/165,877.92
  6. Step 6: Final answer
    x = 124,788.09

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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.