Home / 189,589.12-261,632.16-104,705.76

Finding the Fourth Proportional to 189,589.12, 261,632.16 and 104,705.76

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Solution

The fourth proportional to 189,589.12, 261,632.16 and 104,705.76 is: 144,493.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,589.12 : 261,632.16 = 104,705.76 : x
  2. Step 2: Convert to fraction form
    189,589.12/261,632.16 = 104,705.76/x
  3. Step 3: Cross multiply
    189,589.12x = 261,632.16 × 104,705.76
  4. Step 4: Simplify right side
    189,589.12x = 27,394,394,153.24
  5. Step 5: Solve for x
    x = 27,394,394,153.24/189,589.12
  6. Step 6: Final answer
    x = 144,493.49

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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.