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Finding the Fourth Proportional to 121,845.90, 182,704.05 and 51,645.90

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Solution

The fourth proportional to 121,845.90, 182,704.05 and 51,645.90 is: 77,441.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,845.90 : 182,704.05 = 51,645.90 : x
  2. Step 2: Convert to fraction form
    121,845.90/182,704.05 = 51,645.90/x
  3. Step 3: Cross multiply
    121,845.90x = 182,704.05 × 51,645.90
  4. Step 4: Simplify right side
    121,845.90x = 9,435,915,095.90
  5. Step 5: Solve for x
    x = 9,435,915,095.90/121,845.90
  6. Step 6: Final answer
    x = 77,441.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.