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Finding the Fourth Proportional to 189,169.74, 261,007.83 and 124,631.82

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Solution

The fourth proportional to 189,169.74, 261,007.83 and 124,631.82 is: 171,961.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,169.74 : 261,007.83 = 124,631.82 : x
  2. Step 2: Convert to fraction form
    189,169.74/261,007.83 = 124,631.82/x
  3. Step 3: Cross multiply
    189,169.74x = 261,007.83 × 124,631.82
  4. Step 4: Simplify right side
    189,169.74x = 32,529,880,887.15
  5. Step 5: Solve for x
    x = 32,529,880,887.15/189,169.74
  6. Step 6: Final answer
    x = 171,961.33

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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.