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Finding the Fourth Proportional to 163,291.22, 225,329.43 and 91,657.40

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Solution

The fourth proportional to 163,291.22, 225,329.43 and 91,657.40 is: 126,480.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,291.22 : 225,329.43 = 91,657.40 : x
  2. Step 2: Convert to fraction form
    163,291.22/225,329.43 = 91,657.40/x
  3. Step 3: Cross multiply
    163,291.22x = 225,329.43 × 91,657.40
  4. Step 4: Simplify right side
    163,291.22x = 20,653,108,570.63
  5. Step 5: Solve for x
    x = 20,653,108,570.63/163,291.22
  6. Step 6: Final answer
    x = 126,480.22

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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.