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Finding the Fourth Proportional to 169,919.20, 254,878.80 and 51,584.80

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Solution

The fourth proportional to 169,919.20, 254,878.80 and 51,584.80 is: 77,377.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,919.20 : 254,878.80 = 51,584.80 : x
  2. Step 2: Convert to fraction form
    169,919.20/254,878.80 = 51,584.80/x
  3. Step 3: Cross multiply
    169,919.20x = 254,878.80 × 51,584.80
  4. Step 4: Simplify right side
    169,919.20x = 13,147,871,922.24
  5. Step 5: Solve for x
    x = 13,147,871,922.24/169,919.20
  6. Step 6: Final answer
    x = 77,377.20

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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.