Home / 136,920.98-188,956.19-79,559.62

Finding the Fourth Proportional to 136,920.98, 188,956.19 and 79,559.62

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Solution

The fourth proportional to 136,920.98, 188,956.19 and 79,559.62 is: 109,795.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,920.98 : 188,956.19 = 79,559.62 : x
  2. Step 2: Convert to fraction form
    136,920.98/188,956.19 = 79,559.62/x
  3. Step 3: Cross multiply
    136,920.98x = 188,956.19 × 79,559.62
  4. Step 4: Simplify right side
    136,920.98x = 15,033,282,399.56
  5. Step 5: Solve for x
    x = 15,033,282,399.56/136,920.98
  6. Step 6: Final answer
    x = 109,795.31

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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.