Home / 120,081.22-165,712.58-65,634.48

Finding the Fourth Proportional to 120,081.22, 165,712.58 and 65,634.48

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Solution

The fourth proportional to 120,081.22, 165,712.58 and 65,634.48 is: 90,575.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,081.22 : 165,712.58 = 65,634.48 : x
  2. Step 2: Convert to fraction form
    120,081.22/165,712.58 = 65,634.48/x
  3. Step 3: Cross multiply
    120,081.22x = 165,712.58 × 65,634.48
  4. Step 4: Simplify right side
    120,081.22x = 10,876,459,017.76
  5. Step 5: Solve for x
    x = 10,876,459,017.76/120,081.22
  6. Step 6: Final answer
    x = 90,575.85

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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.