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Finding the Fourth Proportional to 172,302.32, 237,742.29 and 100,668.49

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Solution

The fourth proportional to 172,302.32, 237,742.29 and 100,668.49 is: 138,902.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,302.32 : 237,742.29 = 100,668.49 : x
  2. Step 2: Convert to fraction form
    172,302.32/237,742.29 = 100,668.49/x
  3. Step 3: Cross multiply
    172,302.32x = 237,742.29 × 100,668.49
  4. Step 4: Simplify right side
    172,302.32x = 23,933,156,749.09
  5. Step 5: Solve for x
    x = 23,933,156,749.09/172,302.32
  6. Step 6: Final answer
    x = 138,902.11

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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.