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Finding the Fourth Proportional to 170,624.40, 255,936.60 and 81,862.80

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Solution

The fourth proportional to 170,624.40, 255,936.60 and 81,862.80 is: 122,794.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,624.40 : 255,936.60 = 81,862.80 : x
  2. Step 2: Convert to fraction form
    170,624.40/255,936.60 = 81,862.80/x
  3. Step 3: Cross multiply
    170,624.40x = 255,936.60 × 81,862.80
  4. Step 4: Simplify right side
    170,624.40x = 20,951,686,698.48
  5. Step 5: Solve for x
    x = 20,951,686,698.48/170,624.40
  6. Step 6: Final answer
    x = 122,794.20

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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.