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Finding the Fourth Proportional to 139,575.42, 192,608.52 and 75,913.26

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Solution

The fourth proportional to 139,575.42, 192,608.52 and 75,913.26 is: 104,757.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,575.42 : 192,608.52 = 75,913.26 : x
  2. Step 2: Convert to fraction form
    139,575.42/192,608.52 = 75,913.26/x
  3. Step 3: Cross multiply
    139,575.42x = 192,608.52 × 75,913.26
  4. Step 4: Simplify right side
    139,575.42x = 14,621,540,656.98
  5. Step 5: Solve for x
    x = 14,621,540,656.98/139,575.42
  6. Step 6: Final answer
    x = 104,757.28

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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.