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Finding the Fourth Proportional to 103,043.80, 154,614.30 and 76,799.80

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Solution

The fourth proportional to 103,043.80, 154,614.30 and 76,799.80 is: 115,235.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,043.80 : 154,614.30 = 76,799.80 : x
  2. Step 2: Convert to fraction form
    103,043.80/154,614.30 = 76,799.80/x
  3. Step 3: Cross multiply
    103,043.80x = 154,614.30 × 76,799.80
  4. Step 4: Simplify right side
    103,043.80x = 11,874,347,317.14
  5. Step 5: Solve for x
    x = 11,874,347,317.14/103,043.80
  6. Step 6: Final answer
    x = 115,235.92

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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.