Home / 167,438.20-251,181.60-78,694.60

Finding the Fourth Proportional to 167,438.20, 251,181.60 and 78,694.60

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Solution

The fourth proportional to 167,438.20, 251,181.60 and 78,694.60 is: 118,053.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,438.20 : 251,181.60 = 78,694.60 : x
  2. Step 2: Convert to fraction form
    167,438.20/251,181.60 = 78,694.60/x
  3. Step 3: Cross multiply
    167,438.20x = 251,181.60 × 78,694.60
  4. Step 4: Simplify right side
    167,438.20x = 19,766,635,539.36
  5. Step 5: Solve for x
    x = 19,766,635,539.36/167,438.20
  6. Step 6: Final answer
    x = 118,053.32

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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.