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Finding the Fourth Proportional to 101,229.43, 139,697.72 and 58,230.28

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Solution

The fourth proportional to 101,229.43, 139,697.72 and 58,230.28 is: 80,358.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,229.43 : 139,697.72 = 58,230.28 : x
  2. Step 2: Convert to fraction form
    101,229.43/139,697.72 = 58,230.28/x
  3. Step 3: Cross multiply
    101,229.43x = 139,697.72 × 58,230.28
  4. Step 4: Simplify right side
    101,229.43x = 8,134,637,147.29
  5. Step 5: Solve for x
    x = 8,134,637,147.29/101,229.43
  6. Step 6: Final answer
    x = 80,358.42

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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.