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Finding the Fourth Proportional to 163,396.85, 225,474.17 and 90,801.88

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Solution

The fourth proportional to 163,396.85, 225,474.17 and 90,801.88 is: 125,299.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,396.85 : 225,474.17 = 90,801.88 : x
  2. Step 2: Convert to fraction form
    163,396.85/225,474.17 = 90,801.88/x
  3. Step 3: Cross multiply
    163,396.85x = 225,474.17 × 90,801.88
  4. Step 4: Simplify right side
    163,396.85x = 20,473,477,509.74
  5. Step 5: Solve for x
    x = 20,473,477,509.74/163,396.85
  6. Step 6: Final answer
    x = 125,299.10

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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.