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Finding the Fourth Proportional to 103,305.48, 154,760.58 and 69,861.24

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Solution

The fourth proportional to 103,305.48, 154,760.58 and 69,861.24 is: 104,658.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,305.48 : 154,760.58 = 69,861.24 : x
  2. Step 2: Convert to fraction form
    103,305.48/154,760.58 = 69,861.24/x
  3. Step 3: Cross multiply
    103,305.48x = 154,760.58 × 69,861.24
  4. Step 4: Simplify right side
    103,305.48x = 10,811,766,021.92
  5. Step 5: Solve for x
    x = 10,811,766,021.92/103,305.48
  6. Step 6: Final answer
    x = 104,658.20

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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.