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Finding the Fourth Proportional to 172,992.41, 238,724.11 and 101,420.10

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Solution

The fourth proportional to 172,992.41, 238,724.11 and 101,420.10 is: 139,956.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,992.41 : 238,724.11 = 101,420.10 : x
  2. Step 2: Convert to fraction form
    172,992.41/238,724.11 = 101,420.10/x
  3. Step 3: Cross multiply
    172,992.41x = 238,724.11 × 101,420.10
  4. Step 4: Simplify right side
    172,992.41x = 24,211,423,235.39
  5. Step 5: Solve for x
    x = 24,211,423,235.39/172,992.41
  6. Step 6: Final answer
    x = 139,956.56

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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.