Home / 156,991.70-216,654.27-89,936.66

Finding the Fourth Proportional to 156,991.70, 216,654.27 and 89,936.66

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Solution

The fourth proportional to 156,991.70, 216,654.27 and 89,936.66 is: 124,115.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,991.70 : 216,654.27 = 89,936.66 : x
  2. Step 2: Convert to fraction form
    156,991.70/216,654.27 = 89,936.66/x
  3. Step 3: Cross multiply
    156,991.70x = 216,654.27 × 89,936.66
  4. Step 4: Simplify right side
    156,991.70x = 19,485,161,418.54
  5. Step 5: Solve for x
    x = 19,485,161,418.54/156,991.70
  6. Step 6: Final answer
    x = 124,115.87

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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.