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Finding the Fourth Proportional to 168,889.80, 253,261.80 and 84,617.40

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Solution

The fourth proportional to 168,889.80, 253,261.80 and 84,617.40 is: 126,889.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,889.80 : 253,261.80 = 84,617.40 : x
  2. Step 2: Convert to fraction form
    168,889.80/253,261.80 = 84,617.40/x
  3. Step 3: Cross multiply
    168,889.80x = 253,261.80 × 84,617.40
  4. Step 4: Simplify right side
    168,889.80x = 21,430,355,035.32
  5. Step 5: Solve for x
    x = 21,430,355,035.32/168,889.80
  6. Step 6: Final answer
    x = 126,889.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.