Home / 126,388.89-174,450.29-78,615.09

Finding the Fourth Proportional to 126,388.89, 174,450.29 and 78,615.09

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Solution

The fourth proportional to 126,388.89, 174,450.29 and 78,615.09 is: 108,509.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,388.89 : 174,450.29 = 78,615.09 : x
  2. Step 2: Convert to fraction form
    126,388.89/174,450.29 = 78,615.09/x
  3. Step 3: Cross multiply
    126,388.89x = 174,450.29 × 78,615.09
  4. Step 4: Simplify right side
    126,388.89x = 13,714,424,855.80
  5. Step 5: Solve for x
    x = 13,714,424,855.80/126,388.89
  6. Step 6: Final answer
    x = 108,509.73

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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.