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Finding the Fourth Proportional to 163,252.81, 225,271.59 and 91,640.71

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Solution

The fourth proportional to 163,252.81, 225,271.59 and 91,640.71 is: 126,454.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,252.81 : 225,271.59 = 91,640.71 : x
  2. Step 2: Convert to fraction form
    163,252.81/225,271.59 = 91,640.71/x
  3. Step 3: Cross multiply
    163,252.81x = 225,271.59 × 91,640.71
  4. Step 4: Simplify right side
    163,252.81x = 20,644,048,450.43
  5. Step 5: Solve for x
    x = 20,644,048,450.43/163,252.81
  6. Step 6: Final answer
    x = 126,454.48

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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.