Home / 121,504.20-182,256.30-91,979.70

Finding the Fourth Proportional to 121,504.20, 182,256.30 and 91,979.70

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Solution

The fourth proportional to 121,504.20, 182,256.30 and 91,979.70 is: 137,969.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,504.20 : 182,256.30 = 91,979.70 : x
  2. Step 2: Convert to fraction form
    121,504.20/182,256.30 = 91,979.70/x
  3. Step 3: Cross multiply
    121,504.20x = 182,256.30 × 91,979.70
  4. Step 4: Simplify right side
    121,504.20x = 16,763,879,797.11
  5. Step 5: Solve for x
    x = 16,763,879,797.11/121,504.20
  6. Step 6: Final answer
    x = 137,969.55

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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.