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Finding the Fourth Proportional to 172,720.94, 238,372.17 and 101,096.78

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Solution

The fourth proportional to 172,720.94, 238,372.17 and 101,096.78 is: 139,523.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,720.94 : 238,372.17 = 101,096.78 : x
  2. Step 2: Convert to fraction form
    172,720.94/238,372.17 = 101,096.78/x
  3. Step 3: Cross multiply
    172,720.94x = 238,372.17 × 101,096.78
  4. Step 4: Simplify right side
    172,720.94x = 24,098,658,828.61
  5. Step 5: Solve for x
    x = 24,098,658,828.61/172,720.94
  6. Step 6: Final answer
    x = 139,523.67

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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.