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Finding the Fourth Proportional to 164,067.80, 245,583.30 and 128,816.60

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Solution

The fourth proportional to 164,067.80, 245,583.30 and 128,816.60 is: 192,817.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,067.80 : 245,583.30 = 128,816.60 : x
  2. Step 2: Convert to fraction form
    164,067.80/245,583.30 = 128,816.60/x
  3. Step 3: Cross multiply
    164,067.80x = 245,583.30 × 128,816.60
  4. Step 4: Simplify right side
    164,067.80x = 31,635,205,722.78
  5. Step 5: Solve for x
    x = 31,635,205,722.78/164,067.80
  6. Step 6: Final answer
    x = 192,817.88

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1.5x scale

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.