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Finding the Fourth Proportional to 163,423.98, 225,530.91 and 91,802.43

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Solution

The fourth proportional to 163,423.98, 225,530.91 and 91,802.43 is: 126,690.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,423.98 : 225,530.91 = 91,802.43 : x
  2. Step 2: Convert to fraction form
    163,423.98/225,530.91 = 91,802.43/x
  3. Step 3: Cross multiply
    163,423.98x = 225,530.91 × 91,802.43
  4. Step 4: Simplify right side
    163,423.98x = 20,704,285,578.11
  5. Step 5: Solve for x
    x = 20,704,285,578.11/163,423.98
  6. Step 6: Final answer
    x = 126,690.62

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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.