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Finding the Fourth Proportional to 124,441.52, 171,732.84 and 67,856

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Solution

The fourth proportional to 124,441.52, 171,732.84 and 67,856 is: 93,643.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,441.52 : 171,732.84 = 67,856 : x
  2. Step 2: Convert to fraction form
    124,441.52/171,732.84 = 67,856/x
  3. Step 3: Cross multiply
    124,441.52x = 171,732.84 × 67,856
  4. Step 4: Simplify right side
    124,441.52x = 11,653,103,591.04
  5. Step 5: Solve for x
    x = 11,653,103,591.04/124,441.52
  6. Step 6: Final answer
    x = 93,643.21

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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.