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Finding the Fourth Proportional to 156,949.65, 216,591.03 and 85,329.63

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Solution

The fourth proportional to 156,949.65, 216,591.03 and 85,329.63 is: 117,755.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,949.65 : 216,591.03 = 85,329.63 : x
  2. Step 2: Convert to fraction form
    156,949.65/216,591.03 = 85,329.63/x
  3. Step 3: Cross multiply
    156,949.65x = 216,591.03 × 85,329.63
  4. Step 4: Simplify right side
    156,949.65x = 18,481,632,451.22
  5. Step 5: Solve for x
    x = 18,481,632,451.22/156,949.65
  6. Step 6: Final answer
    x = 117,755.17

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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.