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Finding the Fourth Proportional to 103,867.00, 155,800.55 and 80,209.13

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Solution

The fourth proportional to 103,867.00, 155,800.55 and 80,209.13 is: 120,313.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,867.00 : 155,800.55 = 80,209.13 : x
  2. Step 2: Convert to fraction form
    103,867.00/155,800.55 = 80,209.13/x
  3. Step 3: Cross multiply
    103,867.00x = 155,800.55 × 80,209.13
  4. Step 4: Simplify right side
    103,867.00x = 12,496,626,634.84
  5. Step 5: Solve for x
    x = 12,496,626,634.84/103,867.00
  6. Step 6: Final answer
    x = 120,313.73

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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.