Home / 123,563.75-170,536.19-78,245.87

Finding the Fourth Proportional to 123,563.75, 170,536.19 and 78,245.87

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Solution

The fourth proportional to 123,563.75, 170,536.19 and 78,245.87 is: 107,990.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,563.75 : 170,536.19 = 78,245.87 : x
  2. Step 2: Convert to fraction form
    123,563.75/170,536.19 = 78,245.87/x
  3. Step 3: Cross multiply
    123,563.75x = 170,536.19 × 78,245.87
  4. Step 4: Simplify right side
    123,563.75x = 13,343,752,553.04
  5. Step 5: Solve for x
    x = 13,343,752,553.04/123,563.75
  6. Step 6: Final answer
    x = 107,990.84

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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.