Home / 111,760.56-154,221.84-66,436.20

Finding the Fourth Proportional to 111,760.56, 154,221.84 and 66,436.20

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Solution

The fourth proportional to 111,760.56, 154,221.84 and 66,436.20 is: 91,677.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,760.56 : 154,221.84 = 66,436.20 : x
  2. Step 2: Convert to fraction form
    111,760.56/154,221.84 = 66,436.20/x
  3. Step 3: Cross multiply
    111,760.56x = 154,221.84 × 66,436.20
  4. Step 4: Simplify right side
    111,760.56x = 10,245,913,006.61
  5. Step 5: Solve for x
    x = 10,245,913,006.61/111,760.56
  6. Step 6: Final answer
    x = 91,677.36

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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.