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Finding the Fourth Proportional to 121,776.48, 168,045.30 and 68,050.98

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Solution

The fourth proportional to 121,776.48, 168,045.30 and 68,050.98 is: 93,906.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,776.48 : 168,045.30 = 68,050.98 : x
  2. Step 2: Convert to fraction form
    121,776.48/168,045.30 = 68,050.98/x
  3. Step 3: Cross multiply
    121,776.48x = 168,045.30 × 68,050.98
  4. Step 4: Simplify right side
    121,776.48x = 11,435,647,349.39
  5. Step 5: Solve for x
    x = 11,435,647,349.39/121,776.48
  6. Step 6: Final answer
    x = 93,906.86

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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.