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Finding the Fourth Proportional to 110,645.18, 165,929.39 and 68,460.78

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Solution

The fourth proportional to 110,645.18, 165,929.39 and 68,460.78 is: 102,667.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,645.18 : 165,929.39 = 68,460.78 : x
  2. Step 2: Convert to fraction form
    110,645.18/165,929.39 = 68,460.78/x
  3. Step 3: Cross multiply
    110,645.18x = 165,929.39 × 68,460.78
  4. Step 4: Simplify right side
    110,645.18x = 11,359,655,464.32
  5. Step 5: Solve for x
    x = 11,359,655,464.32/110,645.18
  6. Step 6: Final answer
    x = 102,667.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.