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Finding the Fourth Proportional to 163,155.33, 225,153 and 91,535.31

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Solution

The fourth proportional to 163,155.33, 225,153 and 91,535.31 is: 126,317.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,155.33 : 225,153 = 91,535.31 : x
  2. Step 2: Convert to fraction form
    163,155.33/225,153 = 91,535.31/x
  3. Step 3: Cross multiply
    163,155.33x = 225,153 × 91,535.31
  4. Step 4: Simplify right side
    163,155.33x = 20,609,449,652.43
  5. Step 5: Solve for x
    x = 20,609,449,652.43/163,155.33
  6. Step 6: Final answer
    x = 126,317.97

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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.