Home / 136,934.22-188,936.84-79,539.45

Finding the Fourth Proportional to 136,934.22, 188,936.84 and 79,539.45

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Solution

The fourth proportional to 136,934.22, 188,936.84 and 79,539.45 is: 109,745.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,934.22 : 188,936.84 = 79,539.45 : x
  2. Step 2: Convert to fraction form
    136,934.22/188,936.84 = 79,539.45/x
  3. Step 3: Cross multiply
    136,934.22x = 188,936.84 × 79,539.45
  4. Step 4: Simplify right side
    136,934.22x = 15,027,931,393.65
  5. Step 5: Solve for x
    x = 15,027,931,393.65/136,934.22
  6. Step 6: Final answer
    x = 109,745.62

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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.