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Finding the Fourth Proportional to 157,896.70, 217,897.22 and 89,913.68

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Solution

The fourth proportional to 157,896.70, 217,897.22 and 89,913.68 is: 124,080.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,896.70 : 217,897.22 = 89,913.68 : x
  2. Step 2: Convert to fraction form
    157,896.70/217,897.22 = 89,913.68/x
  3. Step 3: Cross multiply
    157,896.70x = 217,897.22 × 89,913.68
  4. Step 4: Simplify right side
    157,896.70x = 19,591,940,911.97
  5. Step 5: Solve for x
    x = 19,591,940,911.97/157,896.70
  6. Step 6: Final answer
    x = 124,080.75

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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.