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Finding the Fourth Proportional to 104,867.80, 144,803.00 and 85,489.83

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Solution

The fourth proportional to 104,867.80, 144,803.00 and 85,489.83 is: 118,045.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,867.80 : 144,803.00 = 85,489.83 : x
  2. Step 2: Convert to fraction form
    104,867.80/144,803.00 = 85,489.83/x
  3. Step 3: Cross multiply
    104,867.80x = 144,803.00 × 85,489.83
  4. Step 4: Simplify right side
    104,867.80x = 12,379,184,067.21
  5. Step 5: Solve for x
    x = 12,379,184,067.21/104,867.80
  6. Step 6: Final answer
    x = 118,045.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.