Home / 121,884.30-168,246.45-109,114.38

Finding the Fourth Proportional to 121,884.30, 168,246.45 and 109,114.38

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Solution

The fourth proportional to 121,884.30, 168,246.45 and 109,114.38 is: 150,619.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,884.30 : 168,246.45 = 109,114.38 : x
  2. Step 2: Convert to fraction form
    121,884.30/168,246.45 = 109,114.38/x
  3. Step 3: Cross multiply
    121,884.30x = 168,246.45 × 109,114.38
  4. Step 4: Simplify right side
    121,884.30x = 18,358,107,078.95
  5. Step 5: Solve for x
    x = 18,358,107,078.95/121,884.30
  6. Step 6: Final answer
    x = 150,619.13

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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.