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Finding the Fourth Proportional to 113,422.88, 169,871.87 and 109,486.28

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Solution

The fourth proportional to 113,422.88, 169,871.87 and 109,486.28 is: 163,976.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,422.88 : 169,871.87 = 109,486.28 : x
  2. Step 2: Convert to fraction form
    113,422.88/169,871.87 = 109,486.28/x
  3. Step 3: Cross multiply
    113,422.88x = 169,871.87 × 109,486.28
  4. Step 4: Simplify right side
    113,422.88x = 18,598,639,821.34
  5. Step 5: Solve for x
    x = 18,598,639,821.34/113,422.88
  6. Step 6: Final answer
    x = 163,976.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.