Home / 154,743.20-213,559.44-91,049.12

Finding the Fourth Proportional to 154,743.20, 213,559.44 and 91,049.12

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Solution

The fourth proportional to 154,743.20, 213,559.44 and 91,049.12 is: 125,655.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,743.20 : 213,559.44 = 91,049.12 : x
  2. Step 2: Convert to fraction form
    154,743.20/213,559.44 = 91,049.12/x
  3. Step 3: Cross multiply
    154,743.20x = 213,559.44 × 91,049.12
  4. Step 4: Simplify right side
    154,743.20x = 19,444,399,079.69
  5. Step 5: Solve for x
    x = 19,444,399,079.69/154,743.20
  6. Step 6: Final answer
    x = 125,655.92

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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.