Home / 156,949.07-216,588.65-85,329.09

Finding the Fourth Proportional to 156,949.07, 216,588.65 and 85,329.09

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Solution

The fourth proportional to 156,949.07, 216,588.65 and 85,329.09 is: 117,753.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,949.07 : 216,588.65 = 85,329.09 : x
  2. Step 2: Convert to fraction form
    156,949.07/216,588.65 = 85,329.09/x
  3. Step 3: Cross multiply
    156,949.07x = 216,588.65 × 85,329.09
  4. Step 4: Simplify right side
    156,949.07x = 18,481,311,982.18
  5. Step 5: Solve for x
    x = 18,481,311,982.18/156,949.07
  6. Step 6: Final answer
    x = 117,753.57

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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.