Home / 163,123.24-225,120.36-91,507.72

Finding the Fourth Proportional to 163,123.24, 225,120.36 and 91,507.72

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Solution

The fourth proportional to 163,123.24, 225,120.36 and 91,507.72 is: 126,286.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,123.24 : 225,120.36 = 91,507.72 : x
  2. Step 2: Convert to fraction form
    163,123.24/225,120.36 = 91,507.72/x
  3. Step 3: Cross multiply
    163,123.24x = 225,120.36 × 91,507.72
  4. Step 4: Simplify right side
    163,123.24x = 20,600,250,869.18
  5. Step 5: Solve for x
    x = 20,600,250,869.18/163,123.24
  6. Step 6: Final answer
    x = 126,286.43

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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.