Home / 189,691.32-261,896.06-121,737.59

Finding the Fourth Proportional to 189,691.32, 261,896.06 and 121,737.59

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Solution

The fourth proportional to 189,691.32, 261,896.06 and 121,737.59 is: 168,076.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,691.32 : 261,896.06 = 121,737.59 : x
  2. Step 2: Convert to fraction form
    189,691.32/261,896.06 = 121,737.59/x
  3. Step 3: Cross multiply
    189,691.32x = 261,896.06 × 121,737.59
  4. Step 4: Simplify right side
    189,691.32x = 31,882,593,256.73
  5. Step 5: Solve for x
    x = 31,882,593,256.73/189,691.32
  6. Step 6: Final answer
    x = 168,076.18

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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.