Home / 136,474.88-188,329.68-76,042.40

Finding the Fourth Proportional to 136,474.88, 188,329.68 and 76,042.40

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Solution

The fourth proportional to 136,474.88, 188,329.68 and 76,042.40 is: 104,935.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,474.88 : 188,329.68 = 76,042.40 : x
  2. Step 2: Convert to fraction form
    136,474.88/188,329.68 = 76,042.40/x
  3. Step 3: Cross multiply
    136,474.88x = 188,329.68 × 76,042.40
  4. Step 4: Simplify right side
    136,474.88x = 14,321,040,858.43
  5. Step 5: Solve for x
    x = 14,321,040,858.43/136,474.88
  6. Step 6: Final answer
    x = 104,935.36

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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.