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Finding the Fourth Proportional to 172,318.67, 237,764.57 and 100,684.85

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Solution

The fourth proportional to 172,318.67, 237,764.57 and 100,684.85 is: 138,924.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,318.67 : 237,764.57 = 100,684.85 : x
  2. Step 2: Convert to fraction form
    172,318.67/237,764.57 = 100,684.85/x
  3. Step 3: Cross multiply
    172,318.67x = 237,764.57 × 100,684.85
  4. Step 4: Simplify right side
    172,318.67x = 23,939,289,042.23
  5. Step 5: Solve for x
    x = 23,939,289,042.23/172,318.67
  6. Step 6: Final answer
    x = 138,924.53

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1.5x scale

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.