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Finding the Fourth Proportional to 163,320.22, 225,388.22 and 90,728.61

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Solution

The fourth proportional to 163,320.22, 225,388.22 and 90,728.61 is: 125,208.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,320.22 : 225,388.22 = 90,728.61 : x
  2. Step 2: Convert to fraction form
    163,320.22/225,388.22 = 90,728.61/x
  3. Step 3: Cross multiply
    163,320.22x = 225,388.22 × 90,728.61
  4. Step 4: Simplify right side
    163,320.22x = 20,449,158,784.03
  5. Step 5: Solve for x
    x = 20,449,158,784.03/163,320.22
  6. Step 6: Final answer
    x = 125,208.99

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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.