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Finding the Fourth Proportional to 172,772.81, 238,344.95 and 101,108.46

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Solution

The fourth proportional to 172,772.81, 238,344.95 and 101,108.46 is: 139,481.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,772.81 : 238,344.95 = 101,108.46 : x
  2. Step 2: Convert to fraction form
    172,772.81/238,344.95 = 101,108.46/x
  3. Step 3: Cross multiply
    172,772.81x = 238,344.95 × 101,108.46
  4. Step 4: Simplify right side
    172,772.81x = 24,098,691,096.05
  5. Step 5: Solve for x
    x = 24,098,691,096.05/172,772.81
  6. Step 6: Final answer
    x = 139,481.97

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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.