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Finding the Fourth Proportional to 163,589, 225,750.66 and 90,991.40

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Solution

The fourth proportional to 163,589, 225,750.66 and 90,991.40 is: 125,566.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,589 : 225,750.66 = 90,991.40 : x
  2. Step 2: Convert to fraction form
    163,589/225,750.66 = 90,991.40/x
  3. Step 3: Cross multiply
    163,589x = 225,750.66 × 90,991.40
  4. Step 4: Simplify right side
    163,589x = 20,541,368,604.32
  5. Step 5: Solve for x
    x = 20,541,368,604.32/163,589
  6. Step 6: Final answer
    x = 125,566.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.