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Finding the Fourth Proportional to 163,390.92, 225,493.11 and 91,785.30

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Solution

The fourth proportional to 163,390.92, 225,493.11 and 91,785.30 is: 126,671.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,390.92 : 225,493.11 = 91,785.30 : x
  2. Step 2: Convert to fraction form
    163,390.92/225,493.11 = 91,785.30/x
  3. Step 3: Cross multiply
    163,390.92x = 225,493.11 × 91,785.30
  4. Step 4: Simplify right side
    163,390.92x = 20,696,952,749.28
  5. Step 5: Solve for x
    x = 20,696,952,749.28/163,390.92
  6. Step 6: Final answer
    x = 126,671.38

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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.