Home / 111,920.12-154,588.46-81,244.25

Finding the Fourth Proportional to 111,920.12, 154,588.46 and 81,244.25

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Solution

The fourth proportional to 111,920.12, 154,588.46 and 81,244.25 is: 112,217.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,920.12 : 154,588.46 = 81,244.25 : x
  2. Step 2: Convert to fraction form
    111,920.12/154,588.46 = 81,244.25/x
  3. Step 3: Cross multiply
    111,920.12x = 154,588.46 × 81,244.25
  4. Step 4: Simplify right side
    111,920.12x = 12,559,423,181.75
  5. Step 5: Solve for x
    x = 12,559,423,181.75/111,920.12
  6. Step 6: Final answer
    x = 112,217.75

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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.