Home / 136,499.72-188,375.07-76,069.85

Finding the Fourth Proportional to 136,499.72, 188,375.07 and 76,069.85

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Solution

The fourth proportional to 136,499.72, 188,375.07 and 76,069.85 is: 104,979.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,499.72 : 188,375.07 = 76,069.85 : x
  2. Step 2: Convert to fraction form
    136,499.72/188,375.07 = 76,069.85/x
  3. Step 3: Cross multiply
    136,499.72x = 188,375.07 × 76,069.85
  4. Step 4: Simplify right side
    136,499.72x = 14,329,662,376.76
  5. Step 5: Solve for x
    x = 14,329,662,376.76/136,499.72
  6. Step 6: Final answer
    x = 104,979.43

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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.