Home / 189,989.57-262,193.33-105,105.17

Finding the Fourth Proportional to 189,989.57, 262,193.33 and 105,105.17

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Solution

The fourth proportional to 189,989.57, 262,193.33 and 105,105.17 is: 145,049.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,989.57 : 262,193.33 = 105,105.17 : x
  2. Step 2: Convert to fraction form
    189,989.57/262,193.33 = 105,105.17/x
  3. Step 3: Cross multiply
    189,989.57x = 262,193.33 × 105,105.17
  4. Step 4: Simplify right side
    189,989.57x = 27,557,873,996.99
  5. Step 5: Solve for x
    x = 27,557,873,996.99/189,989.57
  6. Step 6: Final answer
    x = 145,049.40

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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.