Home / 120,321.22-180,659.25-67,117.15

Finding the Fourth Proportional to 120,321.22, 180,659.25 and 67,117.15

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Solution

The fourth proportional to 120,321.22, 180,659.25 and 67,117.15 is: 100,774.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,321.22 : 180,659.25 = 67,117.15 : x
  2. Step 2: Convert to fraction form
    120,321.22/180,659.25 = 67,117.15/x
  3. Step 3: Cross multiply
    120,321.22x = 180,659.25 × 67,117.15
  4. Step 4: Simplify right side
    120,321.22x = 12,125,333,981.14
  5. Step 5: Solve for x
    x = 12,125,333,981.14/120,321.22
  6. Step 6: Final answer
    x = 100,774.69

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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.