Home / 100,278.48-151,122.22-90,295.44

Finding the Fourth Proportional to 100,278.48, 151,122.22 and 90,295.44

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Solution

The fourth proportional to 100,278.48, 151,122.22 and 90,295.44 is: 136,077.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,278.48 : 151,122.22 = 90,295.44 : x
  2. Step 2: Convert to fraction form
    100,278.48/151,122.22 = 90,295.44/x
  3. Step 3: Cross multiply
    100,278.48x = 151,122.22 × 90,295.44
  4. Step 4: Simplify right side
    100,278.48x = 13,645,647,348.68
  5. Step 5: Solve for x
    x = 13,645,647,348.68/100,278.48
  6. Step 6: Final answer
    x = 136,077.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.