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Finding the Fourth Proportional to 103,506.18, 155,221.11 and 36,928.50

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Solution

The fourth proportional to 103,506.18, 155,221.11 and 36,928.50 is: 55,379.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,506.18 : 155,221.11 = 36,928.50 : x
  2. Step 2: Convert to fraction form
    103,506.18/155,221.11 = 36,928.50/x
  3. Step 3: Cross multiply
    103,506.18x = 155,221.11 × 36,928.50
  4. Step 4: Simplify right side
    103,506.18x = 5,732,082,760.64
  5. Step 5: Solve for x
    x = 5,732,082,760.64/103,506.18
  6. Step 6: Final answer
    x = 55,379.14

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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.