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Finding the Fourth Proportional to 157,793.02, 217,753.26 and 86,173.06

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Solution

The fourth proportional to 157,793.02, 217,753.26 and 86,173.06 is: 118,918.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,793.02 : 217,753.26 = 86,173.06 : x
  2. Step 2: Convert to fraction form
    157,793.02/217,753.26 = 86,173.06/x
  3. Step 3: Cross multiply
    157,793.02x = 217,753.26 × 86,173.06
  4. Step 4: Simplify right side
    157,793.02x = 18,764,464,739.18
  5. Step 5: Solve for x
    x = 18,764,464,739.18/157,793.02
  6. Step 6: Final answer
    x = 118,918.22

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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.