Home / 126,740.51-174,902.06-78,993.82

Finding the Fourth Proportional to 126,740.51, 174,902.06 and 78,993.82

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Solution

The fourth proportional to 126,740.51, 174,902.06 and 78,993.82 is: 109,011.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,740.51 : 174,902.06 = 78,993.82 : x
  2. Step 2: Convert to fraction form
    126,740.51/174,902.06 = 78,993.82/x
  3. Step 3: Cross multiply
    126,740.51x = 174,902.06 × 78,993.82
  4. Step 4: Simplify right side
    126,740.51x = 13,816,181,845.27
  5. Step 5: Solve for x
    x = 13,816,181,845.27/126,740.51
  6. Step 6: Final answer
    x = 109,011.57

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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.