Home / 126,664.56-174,752.64-78,878.34

Finding the Fourth Proportional to 126,664.56, 174,752.64 and 78,878.34

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Solution

The fourth proportional to 126,664.56, 174,752.64 and 78,878.34 is: 108,824.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,664.56 : 174,752.64 = 78,878.34 : x
  2. Step 2: Convert to fraction form
    126,664.56/174,752.64 = 78,878.34/x
  3. Step 3: Cross multiply
    126,664.56x = 174,752.64 × 78,878.34
  4. Step 4: Simplify right side
    126,664.56x = 13,784,198,153.82
  5. Step 5: Solve for x
    x = 13,784,198,153.82/126,664.56
  6. Step 6: Final answer
    x = 108,824.43

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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.