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Finding the Fourth Proportional to 170,028.97, 255,042.54 and 81,260.46

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Solution

The fourth proportional to 170,028.97, 255,042.54 and 81,260.46 is: 121,890.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,028.97 : 255,042.54 = 81,260.46 : x
  2. Step 2: Convert to fraction form
    170,028.97/255,042.54 = 81,260.46/x
  3. Step 3: Cross multiply
    170,028.97x = 255,042.54 × 81,260.46
  4. Step 4: Simplify right side
    170,028.97x = 20,724,874,119.97
  5. Step 5: Solve for x
    x = 20,724,874,119.97/170,028.97
  6. Step 6: Final answer
    x = 121,890.25

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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.