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Finding the Fourth Proportional to 239,065.75, 329,910.75 and 133,081.75

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Solution

The fourth proportional to 239,065.75, 329,910.75 and 133,081.75 is: 183,652.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,065.75 : 329,910.75 = 133,081.75 : x
  2. Step 2: Convert to fraction form
    239,065.75/329,910.75 = 133,081.75/x
  3. Step 3: Cross multiply
    239,065.75x = 329,910.75 × 133,081.75
  4. Step 4: Simplify right side
    239,065.75x = 43,905,099,953.81
  5. Step 5: Solve for x
    x = 43,905,099,953.81/239,065.75
  6. Step 6: Final answer
    x = 183,652.82

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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.