Home / 139,707.20-192,790.60-79,274.25

Finding the Fourth Proportional to 139,707.20, 192,790.60 and 79,274.25

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Solution

The fourth proportional to 139,707.20, 192,790.60 and 79,274.25 is: 109,395.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,707.20 : 192,790.60 = 79,274.25 : x
  2. Step 2: Convert to fraction form
    139,707.20/192,790.60 = 79,274.25/x
  3. Step 3: Cross multiply
    139,707.20x = 192,790.60 × 79,274.25
  4. Step 4: Simplify right side
    139,707.20x = 15,283,330,023.86
  5. Step 5: Solve for x
    x = 15,283,330,023.86/139,707.20
  6. Step 6: Final answer
    x = 109,395.43

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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.