Home / 126,740.38-174,901.88-78,993.68

Finding the Fourth Proportional to 126,740.38, 174,901.88 and 78,993.68

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Solution

The fourth proportional to 126,740.38, 174,901.88 and 78,993.68 is: 109,011.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,740.38 : 174,901.88 = 78,993.68 : x
  2. Step 2: Convert to fraction form
    126,740.38/174,901.88 = 78,993.68/x
  3. Step 3: Cross multiply
    126,740.38x = 174,901.88 × 78,993.68
  4. Step 4: Simplify right side
    126,740.38x = 13,816,143,140.12
  5. Step 5: Solve for x
    x = 13,816,143,140.12/126,740.38
  6. Step 6: Final answer
    x = 109,011.38

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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.