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Finding the Fourth Proportional to 139,149.91, 192,027.44 and 75,488.16

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Solution

The fourth proportional to 139,149.91, 192,027.44 and 75,488.16 is: 104,173.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,149.91 : 192,027.44 = 75,488.16 : x
  2. Step 2: Convert to fraction form
    139,149.91/192,027.44 = 75,488.16/x
  3. Step 3: Cross multiply
    139,149.91x = 192,027.44 × 75,488.16
  4. Step 4: Simplify right side
    139,149.91x = 14,495,797,737.67
  5. Step 5: Solve for x
    x = 14,495,797,737.67/139,149.91
  6. Step 6: Final answer
    x = 104,173.97

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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.