Home / 123,811.38-170,860.05-67,223.70

Finding the Fourth Proportional to 123,811.38, 170,860.05 and 67,223.70

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Solution

The fourth proportional to 123,811.38, 170,860.05 and 67,223.70 is: 92,768.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,811.38 : 170,860.05 = 67,223.70 : x
  2. Step 2: Convert to fraction form
    123,811.38/170,860.05 = 67,223.70/x
  3. Step 3: Cross multiply
    123,811.38x = 170,860.05 × 67,223.70
  4. Step 4: Simplify right side
    123,811.38x = 11,485,844,743.19
  5. Step 5: Solve for x
    x = 11,485,844,743.19/123,811.38
  6. Step 6: Final answer
    x = 92,768.89

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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.