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Finding the Fourth Proportional to 169,919.80, 255,074.10 and 99,838.60

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Solution

The fourth proportional to 169,919.80, 255,074.10 and 99,838.60 is: 149,872.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,919.80 : 255,074.10 = 99,838.60 : x
  2. Step 2: Convert to fraction form
    169,919.80/255,074.10 = 99,838.60/x
  3. Step 3: Cross multiply
    169,919.80x = 255,074.10 × 99,838.60
  4. Step 4: Simplify right side
    169,919.80x = 25,466,241,040.26
  5. Step 5: Solve for x
    x = 25,466,241,040.26/169,919.80
  6. Step 6: Final answer
    x = 149,872.12

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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.