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Finding the Fourth Proportional to 139,675.54, 192,756.59 and 79,248.73

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Solution

The fourth proportional to 139,675.54, 192,756.59 and 79,248.73 is: 109,365.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,675.54 : 192,756.59 = 79,248.73 : x
  2. Step 2: Convert to fraction form
    139,675.54/192,756.59 = 79,248.73/x
  3. Step 3: Cross multiply
    139,675.54x = 192,756.59 × 79,248.73
  4. Step 4: Simplify right side
    139,675.54x = 15,275,714,956.63
  5. Step 5: Solve for x
    x = 15,275,714,956.63/139,675.54
  6. Step 6: Final answer
    x = 109,365.71

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1.5x scale

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.