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Finding the Fourth Proportional to 109,110.70, 163,512.45 and 80,809.90

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Solution

The fourth proportional to 109,110.70, 163,512.45 and 80,809.90 is: 121,101.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,110.70 : 163,512.45 = 80,809.90 : x
  2. Step 2: Convert to fraction form
    109,110.70/163,512.45 = 80,809.90/x
  3. Step 3: Cross multiply
    109,110.70x = 163,512.45 × 80,809.90
  4. Step 4: Simplify right side
    109,110.70x = 13,213,424,733.26
  5. Step 5: Solve for x
    x = 13,213,424,733.26/109,110.70
  6. Step 6: Final answer
    x = 121,101.09

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1.5x scale

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.