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Finding the Fourth Proportional to 139,732.78, 193,027.26 and 124,620.58

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Solution

The fourth proportional to 139,732.78, 193,027.26 and 124,620.58 is: 172,151.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,732.78 : 193,027.26 = 124,620.58 : x
  2. Step 2: Convert to fraction form
    139,732.78/193,027.26 = 124,620.58/x
  3. Step 3: Cross multiply
    139,732.78x = 193,027.26 × 124,620.58
  4. Step 4: Simplify right side
    139,732.78x = 24,055,169,097.01
  5. Step 5: Solve for x
    x = 24,055,169,097.01/139,732.78
  6. Step 6: Final answer
    x = 172,151.22

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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.