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Finding the Fourth Proportional to 139,575.70, 192,616.91 and 75,913.93

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Solution

The fourth proportional to 139,575.70, 192,616.91 and 75,913.93 is: 104,762.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,575.70 : 192,616.91 = 75,913.93 : x
  2. Step 2: Convert to fraction form
    139,575.70/192,616.91 = 75,913.93/x
  3. Step 3: Cross multiply
    139,575.70x = 192,616.91 × 75,913.93
  4. Step 4: Simplify right side
    139,575.70x = 14,622,306,622.56
  5. Step 5: Solve for x
    x = 14,622,306,622.56/139,575.70
  6. Step 6: Final answer
    x = 104,762.55

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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.