Home / 120,137.22-165,780.66-66,422.88

Finding the Fourth Proportional to 120,137.22, 165,780.66 and 66,422.88

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Solution

The fourth proportional to 120,137.22, 165,780.66 and 66,422.88 is: 91,658.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,137.22 : 165,780.66 = 66,422.88 : x
  2. Step 2: Convert to fraction form
    120,137.22/165,780.66 = 66,422.88/x
  3. Step 3: Cross multiply
    120,137.22x = 165,780.66 × 66,422.88
  4. Step 4: Simplify right side
    120,137.22x = 11,011,628,885.50
  5. Step 5: Solve for x
    x = 11,011,628,885.50/120,137.22
  6. Step 6: Final answer
    x = 91,658.76

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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.