Home / 139,850.28-192,994.11-76,188.06

Finding the Fourth Proportional to 139,850.28, 192,994.11 and 76,188.06

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Solution

The fourth proportional to 139,850.28, 192,994.11 and 76,188.06 is: 105,139.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,850.28 : 192,994.11 = 76,188.06 : x
  2. Step 2: Convert to fraction form
    139,850.28/192,994.11 = 76,188.06/x
  3. Step 3: Cross multiply
    139,850.28x = 192,994.11 × 76,188.06
  4. Step 4: Simplify right side
    139,850.28x = 14,703,846,832.33
  5. Step 5: Solve for x
    x = 14,703,846,832.33/139,850.28
  6. Step 6: Final answer
    x = 105,139.92

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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.