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Finding the Fourth Proportional to 103,302.40, 154,694.40 and 68,051.20

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Solution

The fourth proportional to 103,302.40, 154,694.40 and 68,051.20 is: 101,906.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,302.40 : 154,694.40 = 68,051.20 : x
  2. Step 2: Convert to fraction form
    103,302.40/154,694.40 = 68,051.20/x
  3. Step 3: Cross multiply
    103,302.40x = 154,694.40 × 68,051.20
  4. Step 4: Simplify right side
    103,302.40x = 10,527,139,553.28
  5. Step 5: Solve for x
    x = 10,527,139,553.28/103,302.40
  6. Step 6: Final answer
    x = 101,906.05

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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.