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Finding the Fourth Proportional to 172,640.45, 238,243.74 and 101,034.12

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Solution

The fourth proportional to 172,640.45, 238,243.74 and 101,034.12 is: 139,427.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,640.45 : 238,243.74 = 101,034.12 : x
  2. Step 2: Convert to fraction form
    172,640.45/238,243.74 = 101,034.12/x
  3. Step 3: Cross multiply
    172,640.45x = 238,243.74 × 101,034.12
  4. Step 4: Simplify right side
    172,640.45x = 24,070,746,616.41
  5. Step 5: Solve for x
    x = 24,070,746,616.41/172,640.45
  6. Step 6: Final answer
    x = 139,427.04

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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.