Home / 123,270.24-170,140.40-80,174.80

Finding the Fourth Proportional to 123,270.24, 170,140.40 and 80,174.80

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Solution

The fourth proportional to 123,270.24, 170,140.40 and 80,174.80 is: 110,659.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,270.24 : 170,140.40 = 80,174.80 : x
  2. Step 2: Convert to fraction form
    123,270.24/170,140.40 = 80,174.80/x
  3. Step 3: Cross multiply
    123,270.24x = 170,140.40 × 80,174.80
  4. Step 4: Simplify right side
    123,270.24x = 13,640,972,541.92
  5. Step 5: Solve for x
    x = 13,640,972,541.92/123,270.24
  6. Step 6: Final answer
    x = 110,659.09

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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.