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Finding the Fourth Proportional to 157,772.80, 217,727.65 and 89,794.95

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Solution

The fourth proportional to 157,772.80, 217,727.65 and 89,794.95 is: 123,917.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,772.80 : 217,727.65 = 89,794.95 : x
  2. Step 2: Convert to fraction form
    157,772.80/217,727.65 = 89,794.95/x
  3. Step 3: Cross multiply
    157,772.80x = 217,727.65 × 89,794.95
  4. Step 4: Simplify right side
    157,772.80x = 19,550,843,445.37
  5. Step 5: Solve for x
    x = 19,550,843,445.37/157,772.80
  6. Step 6: Final answer
    x = 123,917.71

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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.