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Finding the Fourth Proportional to 172,599.20, 238,162.11 and 100,965.68

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Solution

The fourth proportional to 172,599.20, 238,162.11 and 100,965.68 is: 139,318.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,599.20 : 238,162.11 = 100,965.68 : x
  2. Step 2: Convert to fraction form
    172,599.20/238,162.11 = 100,965.68/x
  3. Step 3: Cross multiply
    172,599.20x = 238,162.11 × 100,965.68
  4. Step 4: Simplify right side
    172,599.20x = 24,046,199,386.38
  5. Step 5: Solve for x
    x = 24,046,199,386.38/172,599.20
  6. Step 6: Final answer
    x = 139,318.14

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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.