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Finding the Fourth Proportional to 170,641.98, 255,755.45 and 120,736.49

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Solution

The fourth proportional to 170,641.98, 255,755.45 and 120,736.49 is: 180,957.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,641.98 : 255,755.45 = 120,736.49 : x
  2. Step 2: Convert to fraction form
    170,641.98/255,755.45 = 120,736.49/x
  3. Step 3: Cross multiply
    170,641.98x = 255,755.45 × 120,736.49
  4. Step 4: Simplify right side
    170,641.98x = 30,879,014,354.43
  5. Step 5: Solve for x
    x = 30,879,014,354.43/170,641.98
  6. Step 6: Final answer
    x = 180,957.90

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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.