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Finding the Fourth Proportional to 136,883.98, 188,903.69 and 75,634.11

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Solution

The fourth proportional to 136,883.98, 188,903.69 and 75,634.11 is: 104,377.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,883.98 : 188,903.69 = 75,634.11 : x
  2. Step 2: Convert to fraction form
    136,883.98/188,903.69 = 75,634.11/x
  3. Step 3: Cross multiply
    136,883.98x = 188,903.69 × 75,634.11
  4. Step 4: Simplify right side
    136,883.98x = 14,287,562,468.87
  5. Step 5: Solve for x
    x = 14,287,562,468.87/136,883.98
  6. Step 6: Final answer
    x = 104,377.17

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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.