Home / 193,320.78-266,764.75-108,421.42

Finding the Fourth Proportional to 193,320.78, 266,764.75 and 108,421.42

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Solution

The fourth proportional to 193,320.78, 266,764.75 and 108,421.42 is: 149,611.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,320.78 : 266,764.75 = 108,421.42 : x
  2. Step 2: Convert to fraction form
    193,320.78/266,764.75 = 108,421.42/x
  3. Step 3: Cross multiply
    193,320.78x = 266,764.75 × 108,421.42
  4. Step 4: Simplify right side
    193,320.78x = 28,923,013,000.95
  5. Step 5: Solve for x
    x = 28,923,013,000.95/193,320.78
  6. Step 6: Final answer
    x = 149,611.51

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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.