Home / 120,222.39-165,911.78-66,506.48

Finding the Fourth Proportional to 120,222.39, 165,911.78 and 66,506.48

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Solution

The fourth proportional to 120,222.39, 165,911.78 and 66,506.48 is: 91,781.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,222.39 : 165,911.78 = 66,506.48 : x
  2. Step 2: Convert to fraction form
    120,222.39/165,911.78 = 66,506.48/x
  3. Step 3: Cross multiply
    120,222.39x = 165,911.78 × 66,506.48
  4. Step 4: Simplify right side
    120,222.39x = 11,034,209,059.38
  5. Step 5: Solve for x
    x = 11,034,209,059.38/120,222.39
  6. Step 6: Final answer
    x = 91,781.65

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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.