Home / 139,719.01-192,385.26-105,313.75

Finding the Fourth Proportional to 139,719.01, 192,385.26 and 105,313.75

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Solution

The fourth proportional to 139,719.01, 192,385.26 and 105,313.75 is: 145,011.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,719.01 : 192,385.26 = 105,313.75 : x
  2. Step 2: Convert to fraction form
    139,719.01/192,385.26 = 105,313.75/x
  3. Step 3: Cross multiply
    139,719.01x = 192,385.26 × 105,313.75
  4. Step 4: Simplify right side
    139,719.01x = 20,260,813,175.33
  5. Step 5: Solve for x
    x = 20,260,813,175.33/139,719.01
  6. Step 6: Final answer
    x = 145,011.14

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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.