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Finding the Fourth Proportional to 139,237.52, 192,142.63 and 75,573.96

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Solution

The fourth proportional to 139,237.52, 192,142.63 and 75,573.96 is: 104,289.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,237.52 : 192,142.63 = 75,573.96 : x
  2. Step 2: Convert to fraction form
    139,237.52/192,142.63 = 75,573.96/x
  3. Step 3: Cross multiply
    139,237.52x = 192,142.63 × 75,573.96
  4. Step 4: Simplify right side
    139,237.52x = 14,520,979,433.91
  5. Step 5: Solve for x
    x = 14,520,979,433.91/139,237.52
  6. Step 6: Final answer
    x = 104,289.27

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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.