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Finding the Fourth Proportional to 122,350.40, 168,851.30 and 68,638.89

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Solution

The fourth proportional to 122,350.40, 168,851.30 and 68,638.89 is: 94,726.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,350.40 : 168,851.30 = 68,638.89 : x
  2. Step 2: Convert to fraction form
    122,350.40/168,851.30 = 68,638.89/x
  3. Step 3: Cross multiply
    122,350.40x = 168,851.30 × 68,638.89
  4. Step 4: Simplify right side
    122,350.40x = 11,589,765,807.06
  5. Step 5: Solve for x
    x = 11,589,765,807.06/122,350.40
  6. Step 6: Final answer
    x = 94,726.02

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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.