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Finding the Fourth Proportional to 163,254.12, 225,278.28 and 91,620.28

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Solution

The fourth proportional to 163,254.12, 225,278.28 and 91,620.28 is: 126,429.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,254.12 : 225,278.28 = 91,620.28 : x
  2. Step 2: Convert to fraction form
    163,254.12/225,278.28 = 91,620.28/x
  3. Step 3: Cross multiply
    163,254.12x = 225,278.28 × 91,620.28
  4. Step 4: Simplify right side
    163,254.12x = 20,640,059,373.12
  5. Step 5: Solve for x
    x = 20,640,059,373.12/163,254.12
  6. Step 6: Final answer
    x = 126,429.03

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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.