Home / 189,160.11-261,113.81-138,574.61

Finding the Fourth Proportional to 189,160.11, 261,113.81 and 138,574.61

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Solution

The fourth proportional to 189,160.11, 261,113.81 and 138,574.61 is: 191,286.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,160.11 : 261,113.81 = 138,574.61 : x
  2. Step 2: Convert to fraction form
    189,160.11/261,113.81 = 138,574.61/x
  3. Step 3: Cross multiply
    189,160.11x = 261,113.81 × 138,574.61
  4. Step 4: Simplify right side
    189,160.11x = 36,183,742,387.92
  5. Step 5: Solve for x
    x = 36,183,742,387.92/189,160.11
  6. Step 6: Final answer
    x = 191,286.33

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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.