Home / 189,691.27-261,895.98-121,737.53

Finding the Fourth Proportional to 189,691.27, 261,895.98 and 121,737.53

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Solution

The fourth proportional to 189,691.27, 261,895.98 and 121,737.53 is: 168,076.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,691.27 : 261,895.98 = 121,737.53 : x
  2. Step 2: Convert to fraction form
    189,691.27/261,895.98 = 121,737.53/x
  3. Step 3: Cross multiply
    189,691.27x = 261,895.98 × 121,737.53
  4. Step 4: Simplify right side
    189,691.27x = 31,882,570,833.39
  5. Step 5: Solve for x
    x = 31,882,570,833.39/189,691.27
  6. Step 6: Final answer
    x = 168,076.11

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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.