Home / 91,139.04-125,700.66-80,940.33

Finding the Fourth Proportional to 91,139.04, 125,700.66 and 80,940.33

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Solution

The fourth proportional to 91,139.04, 125,700.66 and 80,940.33 is: 111,634.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,139.04 : 125,700.66 = 80,940.33 : x
  2. Step 2: Convert to fraction form
    91,139.04/125,700.66 = 80,940.33/x
  3. Step 3: Cross multiply
    91,139.04x = 125,700.66 × 80,940.33
  4. Step 4: Simplify right side
    91,139.04x = 10,174,252,901.62
  5. Step 5: Solve for x
    x = 10,174,252,901.62/91,139.04
  6. Step 6: Final answer
    x = 111,634.41

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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.