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Finding the Fourth Proportional to 163,989.30, 246,045.90 and 64,220.78

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Solution

The fourth proportional to 163,989.30, 246,045.90 and 64,220.78 is: 96,355.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,989.30 : 246,045.90 = 64,220.78 : x
  2. Step 2: Convert to fraction form
    163,989.30/246,045.90 = 64,220.78/x
  3. Step 3: Cross multiply
    163,989.30x = 246,045.90 × 64,220.78
  4. Step 4: Simplify right side
    163,989.30x = 15,801,259,613.80
  5. Step 5: Solve for x
    x = 15,801,259,613.80/163,989.30
  6. Step 6: Final answer
    x = 96,355.43

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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.