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Finding the Fourth Proportional to 109,996.70, 165,059.85 and 72,664.70

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Solution

The fourth proportional to 109,996.70, 165,059.85 and 72,664.70 is: 109,039.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,996.70 : 165,059.85 = 72,664.70 : x
  2. Step 2: Convert to fraction form
    109,996.70/165,059.85 = 72,664.70/x
  3. Step 3: Cross multiply
    109,996.70x = 165,059.85 × 72,664.70
  4. Step 4: Simplify right side
    109,996.70x = 11,994,024,482.30
  5. Step 5: Solve for x
    x = 11,994,024,482.30/109,996.70
  6. Step 6: Final answer
    x = 109,039.86

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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.