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Finding the Fourth Proportional to 157,324.71, 217,101.06 and 91,919.57

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Solution

The fourth proportional to 157,324.71, 217,101.06 and 91,919.57 is: 126,844.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,324.71 : 217,101.06 = 91,919.57 : x
  2. Step 2: Convert to fraction form
    157,324.71/217,101.06 = 91,919.57/x
  3. Step 3: Cross multiply
    157,324.71x = 217,101.06 × 91,919.57
  4. Step 4: Simplify right side
    157,324.71x = 19,955,835,079.39
  5. Step 5: Solve for x
    x = 19,955,835,079.39/157,324.71
  6. Step 6: Final answer
    x = 126,844.89

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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.