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Finding the Fourth Proportional to 157,728.73, 217,662.75 and 89,744.22

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Solution

The fourth proportional to 157,728.73, 217,662.75 and 89,744.22 is: 123,845.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,728.73 : 217,662.75 = 89,744.22 : x
  2. Step 2: Convert to fraction form
    157,728.73/217,662.75 = 89,744.22/x
  3. Step 3: Cross multiply
    157,728.73x = 217,662.75 × 89,744.22
  4. Step 4: Simplify right side
    157,728.73x = 19,533,973,721.81
  5. Step 5: Solve for x
    x = 19,533,973,721.81/157,728.73
  6. Step 6: Final answer
    x = 123,845.38

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1.5x scale

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.