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Finding the Fourth Proportional to 103,138.99, 154,002.87 and 92,396.03

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Solution

The fourth proportional to 103,138.99, 154,002.87 and 92,396.03 is: 137,961.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,138.99 : 154,002.87 = 92,396.03 : x
  2. Step 2: Convert to fraction form
    103,138.99/154,002.87 = 92,396.03/x
  3. Step 3: Cross multiply
    103,138.99x = 154,002.87 × 92,396.03
  4. Step 4: Simplify right side
    103,138.99x = 14,229,253,026.59
  5. Step 5: Solve for x
    x = 14,229,253,026.59/103,138.99
  6. Step 6: Final answer
    x = 137,961.92

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.