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Finding the Fourth Proportional to 165,993.86, 229,069.53 and 90,540.74

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Solution

The fourth proportional to 165,993.86, 229,069.53 and 90,540.74 is: 124,945.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,993.86 : 229,069.53 = 90,540.74 : x
  2. Step 2: Convert to fraction form
    165,993.86/229,069.53 = 90,540.74/x
  3. Step 3: Cross multiply
    165,993.86x = 229,069.53 × 90,540.74
  4. Step 4: Simplify right side
    165,993.86x = 20,740,124,757.65
  5. Step 5: Solve for x
    x = 20,740,124,757.65/165,993.86
  6. Step 6: Final answer
    x = 124,945.13

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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.