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Finding the Fourth Proportional to 163,241.22, 225,261.90 and 90,640.38

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Solution

The fourth proportional to 163,241.22, 225,261.90 and 90,640.38 is: 125,077.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,241.22 : 225,261.90 = 90,640.38 : x
  2. Step 2: Convert to fraction form
    163,241.22/225,261.90 = 90,640.38/x
  3. Step 3: Cross multiply
    163,241.22x = 225,261.90 × 90,640.38
  4. Step 4: Simplify right side
    163,241.22x = 20,417,824,215.52
  5. Step 5: Solve for x
    x = 20,417,824,215.52/163,241.22
  6. Step 6: Final answer
    x = 125,077.63

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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.