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Finding the Fourth Proportional to 139,510.20, 192,521.64 and 75,847.44

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Solution

The fourth proportional to 139,510.20, 192,521.64 and 75,847.44 is: 104,668.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,510.20 : 192,521.64 = 75,847.44 : x
  2. Step 2: Convert to fraction form
    139,510.20/192,521.64 = 75,847.44/x
  3. Step 3: Cross multiply
    139,510.20x = 192,521.64 × 75,847.44
  4. Step 4: Simplify right side
    139,510.20x = 14,602,273,538.60
  5. Step 5: Solve for x
    x = 14,602,273,538.60/139,510.20
  6. Step 6: Final answer
    x = 104,668.14

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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.