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Finding the Fourth Proportional to 163,436, 245,168.10 and 45,107.34

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Solution

The fourth proportional to 163,436, 245,168.10 and 45,107.34 is: 67,664.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,436 : 245,168.10 = 45,107.34 : x
  2. Step 2: Convert to fraction form
    163,436/245,168.10 = 45,107.34/x
  3. Step 3: Cross multiply
    163,436x = 245,168.10 × 45,107.34
  4. Step 4: Simplify right side
    163,436x = 11,058,880,843.85
  5. Step 5: Solve for x
    x = 11,058,880,843.85/163,436
  6. Step 6: Final answer
    x = 67,664.90

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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.