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Finding the Fourth Proportional to 158,227.76, 218,360.32 and 90,255.80

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Solution

The fourth proportional to 158,227.76, 218,360.32 and 90,255.80 is: 124,556.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,227.76 : 218,360.32 = 90,255.80 : x
  2. Step 2: Convert to fraction form
    158,227.76/218,360.32 = 90,255.80/x
  3. Step 3: Cross multiply
    158,227.76x = 218,360.32 × 90,255.80
  4. Step 4: Simplify right side
    158,227.76x = 19,708,285,690.12
  5. Step 5: Solve for x
    x = 19,708,285,690.12/158,227.76
  6. Step 6: Final answer
    x = 124,556.43

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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.