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Finding the Fourth Proportional to 163,453.82, 225,564.73 and 90,854.81

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Solution

The fourth proportional to 163,453.82, 225,564.73 and 90,854.81 is: 125,378.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,453.82 : 225,564.73 = 90,854.81 : x
  2. Step 2: Convert to fraction form
    163,453.82/225,564.73 = 90,854.81/x
  3. Step 3: Cross multiply
    163,453.82x = 225,564.73 × 90,854.81
  4. Step 4: Simplify right side
    163,453.82x = 20,493,640,686.85
  5. Step 5: Solve for x
    x = 20,493,640,686.85/163,453.82
  6. Step 6: Final answer
    x = 125,378.78

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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.