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Finding the Fourth Proportional to 109,466.62, 163,939.29 and 69,901.18

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Solution

The fourth proportional to 109,466.62, 163,939.29 and 69,901.18 is: 104,685.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,466.62 : 163,939.29 = 69,901.18 : x
  2. Step 2: Convert to fraction form
    109,466.62/163,939.29 = 69,901.18/x
  3. Step 3: Cross multiply
    109,466.62x = 163,939.29 × 69,901.18
  4. Step 4: Simplify right side
    109,466.62x = 11,459,549,819.36
  5. Step 5: Solve for x
    x = 11,459,549,819.36/109,466.62
  6. Step 6: Final answer
    x = 104,685.34

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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.