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Finding the Fourth Proportional to 157,662.88, 217,573.38 and 86,040.52

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Solution

The fourth proportional to 157,662.88, 217,573.38 and 86,040.52 is: 118,735.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,662.88 : 217,573.38 = 86,040.52 : x
  2. Step 2: Convert to fraction form
    157,662.88/217,573.38 = 86,040.52/x
  3. Step 3: Cross multiply
    157,662.88x = 217,573.38 × 86,040.52
  4. Step 4: Simplify right side
    157,662.88x = 18,720,126,753.36
  5. Step 5: Solve for x
    x = 18,720,126,753.36/157,662.88
  6. Step 6: Final answer
    x = 118,735.16

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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.