Home / 123,617.70-170,464.23-105,771.78

Finding the Fourth Proportional to 123,617.70, 170,464.23 and 105,771.78

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Solution

The fourth proportional to 123,617.70, 170,464.23 and 105,771.78 is: 145,855.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,617.70 : 170,464.23 = 105,771.78 : x
  2. Step 2: Convert to fraction form
    123,617.70/170,464.23 = 105,771.78/x
  3. Step 3: Cross multiply
    123,617.70x = 170,464.23 × 105,771.78
  4. Step 4: Simplify right side
    123,617.70x = 18,030,305,033.43
  5. Step 5: Solve for x
    x = 18,030,305,033.43/123,617.70
  6. Step 6: Final answer
    x = 145,855.37

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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.