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Finding the Fourth Proportional to 103,233.30, 154,811.55 and 40,890.90

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Solution

The fourth proportional to 103,233.30, 154,811.55 and 40,890.90 is: 61,321.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,233.30 : 154,811.55 = 40,890.90 : x
  2. Step 2: Convert to fraction form
    103,233.30/154,811.55 = 40,890.90/x
  3. Step 3: Cross multiply
    103,233.30x = 154,811.55 × 40,890.90
  4. Step 4: Simplify right side
    103,233.30x = 6,330,383,609.90
  5. Step 5: Solve for x
    x = 6,330,383,609.90/103,233.30
  6. Step 6: Final answer
    x = 61,321.14

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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.