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Finding the Fourth Proportional to 163,503, 245,120.94 and 84,639.96

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Solution

The fourth proportional to 163,503, 245,120.94 and 84,639.96 is: 126,890.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,503 : 245,120.94 = 84,639.96 : x
  2. Step 2: Convert to fraction form
    163,503/245,120.94 = 84,639.96/x
  3. Step 3: Cross multiply
    163,503x = 245,120.94 × 84,639.96
  4. Step 4: Simplify right side
    163,503x = 20,747,026,556.76
  5. Step 5: Solve for x
    x = 20,747,026,556.76/163,503
  6. Step 6: Final answer
    x = 126,890.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.