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Finding the Fourth Proportional to 163,322.66, 225,396.42 and 90,734.06

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Solution

The fourth proportional to 163,322.66, 225,396.42 and 90,734.06 is: 125,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,322.66 : 225,396.42 = 90,734.06 : x
  2. Step 2: Convert to fraction form
    163,322.66/225,396.42 = 90,734.06/x
  3. Step 3: Cross multiply
    163,322.66x = 225,396.42 × 90,734.06
  4. Step 4: Simplify right side
    163,322.66x = 20,451,132,296.07
  5. Step 5: Solve for x
    x = 20,451,132,296.07/163,322.66
  6. Step 6: Final answer
    x = 125,219.20

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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.