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Finding the Fourth Proportional to 139,615.47, 192,668.43 and 75,953.52

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Solution

The fourth proportional to 139,615.47, 192,668.43 and 75,953.52 is: 104,815.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,615.47 : 192,668.43 = 75,953.52 : x
  2. Step 2: Convert to fraction form
    139,615.47/192,668.43 = 75,953.52/x
  3. Step 3: Cross multiply
    139,615.47x = 192,668.43 × 75,953.52
  4. Step 4: Simplify right side
    139,615.47x = 14,633,845,451.37
  5. Step 5: Solve for x
    x = 14,633,845,451.37/139,615.47
  6. Step 6: Final answer
    x = 104,815.36

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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.