Home / 139,829.66-192,966.23-79,401.57

Finding the Fourth Proportional to 139,829.66, 192,966.23 and 79,401.57

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Solution

The fourth proportional to 139,829.66, 192,966.23 and 79,401.57 is: 109,574.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,829.66 : 192,966.23 = 79,401.57 : x
  2. Step 2: Convert to fraction form
    139,829.66/192,966.23 = 79,401.57/x
  3. Step 3: Cross multiply
    139,829.66x = 192,966.23 × 79,401.57
  4. Step 4: Simplify right side
    139,829.66x = 15,321,821,093.86
  5. Step 5: Solve for x
    x = 15,321,821,093.86/139,829.66
  6. Step 6: Final answer
    x = 109,574.90

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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.