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Finding the Fourth Proportional to 172,981.08, 238,708.44 and 101,408.76

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Solution

The fourth proportional to 172,981.08, 238,708.44 and 101,408.76 is: 139,940.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,981.08 : 238,708.44 = 101,408.76 : x
  2. Step 2: Convert to fraction form
    172,981.08/238,708.44 = 101,408.76/x
  3. Step 3: Cross multiply
    172,981.08x = 238,708.44 × 101,408.76
  4. Step 4: Simplify right side
    172,981.08x = 24,207,126,901.93
  5. Step 5: Solve for x
    x = 24,207,126,901.93/172,981.08
  6. Step 6: Final answer
    x = 139,940.89

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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.