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Finding the Fourth Proportional to 167,385.78, 230,991.33 and 100,317.78

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Solution

The fourth proportional to 167,385.78, 230,991.33 and 100,317.78 is: 138,437.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,385.78 : 230,991.33 = 100,317.78 : x
  2. Step 2: Convert to fraction form
    167,385.78/230,991.33 = 100,317.78/x
  3. Step 3: Cross multiply
    167,385.78x = 230,991.33 × 100,317.78
  4. Step 4: Simplify right side
    167,385.78x = 23,172,537,424.85
  5. Step 5: Solve for x
    x = 23,172,537,424.85/167,385.78
  6. Step 6: Final answer
    x = 138,437.91

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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.