Home / 112,163.76-154,754.64-66,830.88

Finding the Fourth Proportional to 112,163.76, 154,754.64 and 66,830.88

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Solution

The fourth proportional to 112,163.76, 154,754.64 and 66,830.88 is: 92,207.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,163.76 : 154,754.64 = 66,830.88 : x
  2. Step 2: Convert to fraction form
    112,163.76/154,754.64 = 66,830.88/x
  3. Step 3: Cross multiply
    112,163.76x = 154,754.64 × 66,830.88
  4. Step 4: Simplify right side
    112,163.76x = 10,342,388,775.28
  5. Step 5: Solve for x
    x = 10,342,388,775.28/112,163.76
  6. Step 6: Final answer
    x = 92,207.94

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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.