Home / 126,741.25-174,903.08-78,994.56

Finding the Fourth Proportional to 126,741.25, 174,903.08 and 78,994.56

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Solution

The fourth proportional to 126,741.25, 174,903.08 and 78,994.56 is: 109,012.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,741.25 : 174,903.08 = 78,994.56 : x
  2. Step 2: Convert to fraction form
    126,741.25/174,903.08 = 78,994.56/x
  3. Step 3: Cross multiply
    126,741.25x = 174,903.08 × 78,994.56
  4. Step 4: Simplify right side
    126,741.25x = 13,816,391,847.24
  5. Step 5: Solve for x
    x = 13,816,391,847.24/126,741.25
  6. Step 6: Final answer
    x = 109,012.59

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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.