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Finding the Fourth Proportional to 103,495.83, 155,150.21 and 36,920.13

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Solution

The fourth proportional to 103,495.83, 155,150.21 and 36,920.13 is: 55,346.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,495.83 : 155,150.21 = 36,920.13 : x
  2. Step 2: Convert to fraction form
    103,495.83/155,150.21 = 36,920.13/x
  3. Step 3: Cross multiply
    103,495.83x = 155,150.21 × 36,920.13
  4. Step 4: Simplify right side
    103,495.83x = 5,728,165,765.74
  5. Step 5: Solve for x
    x = 5,728,165,765.74/103,495.83
  6. Step 6: Final answer
    x = 55,346.83

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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.