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Finding the Fourth Proportional to 171,736.78, 237,030.78 and 100,128.28

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Solution

The fourth proportional to 171,736.78, 237,030.78 and 100,128.28 is: 138,196.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,736.78 : 237,030.78 = 100,128.28 : x
  2. Step 2: Convert to fraction form
    171,736.78/237,030.78 = 100,128.28/x
  3. Step 3: Cross multiply
    171,736.78x = 237,030.78 × 100,128.28
  4. Step 4: Simplify right side
    171,736.78x = 23,733,484,308.46
  5. Step 5: Solve for x
    x = 23,733,484,308.46/171,736.78
  6. Step 6: Final answer
    x = 138,196.86

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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.