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Finding the Fourth Proportional to 169,391.40, 254,251.22 and 90,561.08

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Solution

The fourth proportional to 169,391.40, 254,251.22 and 90,561.08 is: 135,929.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,391.40 : 254,251.22 = 90,561.08 : x
  2. Step 2: Convert to fraction form
    169,391.40/254,251.22 = 90,561.08/x
  3. Step 3: Cross multiply
    169,391.40x = 254,251.22 × 90,561.08
  4. Step 4: Simplify right side
    169,391.40x = 23,025,265,074.52
  5. Step 5: Solve for x
    x = 23,025,265,074.52/169,391.40
  6. Step 6: Final answer
    x = 135,929.36

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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.