Home / 111,633.12-154,049.04-66,315.24

Finding the Fourth Proportional to 111,633.12, 154,049.04 and 66,315.24

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Solution

The fourth proportional to 111,633.12, 154,049.04 and 66,315.24 is: 91,512.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,633.12 : 154,049.04 = 66,315.24 : x
  2. Step 2: Convert to fraction form
    111,633.12/154,049.04 = 66,315.24/x
  3. Step 3: Cross multiply
    111,633.12x = 154,049.04 × 66,315.24
  4. Step 4: Simplify right side
    111,633.12x = 10,215,799,059.37
  5. Step 5: Solve for x
    x = 10,215,799,059.37/111,633.12
  6. Step 6: Final answer
    x = 91,512.26

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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.