Home / 163,221.24-225,249.34-91,606.72

Finding the Fourth Proportional to 163,221.24, 225,249.34 and 91,606.72

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Solution

The fourth proportional to 163,221.24, 225,249.34 and 91,606.72 is: 126,419.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,221.24 : 225,249.34 = 91,606.72 : x
  2. Step 2: Convert to fraction form
    163,221.24/225,249.34 = 91,606.72/x
  3. Step 3: Cross multiply
    163,221.24x = 225,249.34 × 91,606.72
  4. Step 4: Simplify right side
    163,221.24x = 20,634,353,219.56
  5. Step 5: Solve for x
    x = 20,634,353,219.56/163,221.24
  6. Step 6: Final answer
    x = 126,419.53

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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.