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Finding the Fourth Proportional to 165,810, 228,819.42 and 90,360.12

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Solution

The fourth proportional to 165,810, 228,819.42 and 90,360.12 is: 124,697.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,810 : 228,819.42 = 90,360.12 : x
  2. Step 2: Convert to fraction form
    165,810/228,819.42 = 90,360.12/x
  3. Step 3: Cross multiply
    165,810x = 228,819.42 × 90,360.12
  4. Step 4: Simplify right side
    165,810x = 20,676,150,249.53
  5. Step 5: Solve for x
    x = 20,676,150,249.53/165,810
  6. Step 6: Final answer
    x = 124,697.85

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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.