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Finding the Fourth Proportional to 172,745.66, 238,388.47 and 101,111.39

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Solution

The fourth proportional to 172,745.66, 238,388.47 and 101,111.39 is: 139,533.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,745.66 : 238,388.47 = 101,111.39 : x
  2. Step 2: Convert to fraction form
    172,745.66/238,388.47 = 101,111.39/x
  3. Step 3: Cross multiply
    172,745.66x = 238,388.47 × 101,111.39
  4. Step 4: Simplify right side
    172,745.66x = 24,103,789,010.91
  5. Step 5: Solve for x
    x = 24,103,789,010.91/172,745.66
  6. Step 6: Final answer
    x = 139,533.40

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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.