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Finding the Fourth Proportional to 172,297.68, 237,735.96 and 100,663.86

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Solution

The fourth proportional to 172,297.68, 237,735.96 and 100,663.86 is: 138,895.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,297.68 : 237,735.96 = 100,663.86 : x
  2. Step 2: Convert to fraction form
    172,297.68/237,735.96 = 100,663.86/x
  3. Step 3: Cross multiply
    172,297.68x = 237,735.96 × 100,663.86
  4. Step 4: Simplify right side
    172,297.68x = 23,931,419,908.43
  5. Step 5: Solve for x
    x = 23,931,419,908.43/172,297.68
  6. Step 6: Final answer
    x = 138,895.78

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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.