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Finding the Fourth Proportional to 172,858.72, 238,460.23 and 115,512.12

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Solution

The fourth proportional to 172,858.72, 238,460.23 and 115,512.12 is: 159,350.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,858.72 : 238,460.23 = 115,512.12 : x
  2. Step 2: Convert to fraction form
    172,858.72/238,460.23 = 115,512.12/x
  3. Step 3: Cross multiply
    172,858.72x = 238,460.23 × 115,512.12
  4. Step 4: Simplify right side
    172,858.72x = 27,545,046,414.21
  5. Step 5: Solve for x
    x = 27,545,046,414.21/172,858.72
  6. Step 6: Final answer
    x = 159,350.06

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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.