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Finding the Fourth Proportional to 163,415.88, 245,217.78 and 68,637.78

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Solution

The fourth proportional to 163,415.88, 245,217.78 and 68,637.78 is: 102,996.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,415.88 : 245,217.78 = 68,637.78 : x
  2. Step 2: Convert to fraction form
    163,415.88/245,217.78 = 68,637.78/x
  3. Step 3: Cross multiply
    163,415.88x = 245,217.78 × 68,637.78
  4. Step 4: Simplify right side
    163,415.88x = 16,831,204,035.73
  5. Step 5: Solve for x
    x = 16,831,204,035.73/163,415.88
  6. Step 6: Final answer
    x = 102,996.13

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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.