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Finding the Fourth Proportional to 169,902.80, 255,048.60 and 99,821.60

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Solution

The fourth proportional to 169,902.80, 255,048.60 and 99,821.60 is: 149,846.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,902.80 : 255,048.60 = 99,821.60 : x
  2. Step 2: Convert to fraction form
    169,902.80/255,048.60 = 99,821.60/x
  3. Step 3: Cross multiply
    169,902.80x = 255,048.60 × 99,821.60
  4. Step 4: Simplify right side
    169,902.80x = 25,459,359,329.76
  5. Step 5: Solve for x
    x = 25,459,359,329.76/169,902.80
  6. Step 6: Final answer
    x = 149,846.61

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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.