Home / 123,078.45-169,857.22-68,634.30

Finding the Fourth Proportional to 123,078.45, 169,857.22 and 68,634.30

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Solution

The fourth proportional to 123,078.45, 169,857.22 and 68,634.30 is: 94,720.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,078.45 : 169,857.22 = 68,634.30 : x
  2. Step 2: Convert to fraction form
    123,078.45/169,857.22 = 68,634.30/x
  3. Step 3: Cross multiply
    123,078.45x = 169,857.22 × 68,634.30
  4. Step 4: Simplify right side
    123,078.45x = 11,658,031,394.65
  5. Step 5: Solve for x
    x = 11,658,031,394.65/123,078.45
  6. Step 6: Final answer
    x = 94,720.33

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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.