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Finding the Fourth Proportional to 101,369.20, 139,908.48 and 58,933.84

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Solution

The fourth proportional to 101,369.20, 139,908.48 and 58,933.84 is: 81,339.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,369.20 : 139,908.48 = 58,933.84 : x
  2. Step 2: Convert to fraction form
    101,369.20/139,908.48 = 58,933.84/x
  3. Step 3: Cross multiply
    101,369.20x = 139,908.48 × 58,933.84
  4. Step 4: Simplify right side
    101,369.20x = 8,245,343,974.96
  5. Step 5: Solve for x
    x = 8,245,343,974.96/101,369.20
  6. Step 6: Final answer
    x = 81,339.74

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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.