Home / 126,740.25-174,901.70-78,993.56

Finding the Fourth Proportional to 126,740.25, 174,901.70 and 78,993.56

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Solution

The fourth proportional to 126,740.25, 174,901.70 and 78,993.56 is: 109,011.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,740.25 : 174,901.70 = 78,993.56 : x
  2. Step 2: Convert to fraction form
    126,740.25/174,901.70 = 78,993.56/x
  3. Step 3: Cross multiply
    126,740.25x = 174,901.70 × 78,993.56
  4. Step 4: Simplify right side
    126,740.25x = 13,816,108,567.79
  5. Step 5: Solve for x
    x = 13,816,108,567.79/126,740.25
  6. Step 6: Final answer
    x = 109,011.21

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1.5x scale

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.