Home / 123,540.18-170,480.88-66,950.34

Finding the Fourth Proportional to 123,540.18, 170,480.88 and 66,950.34

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Solution

The fourth proportional to 123,540.18, 170,480.88 and 66,950.34 is: 92,388.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,540.18 : 170,480.88 = 66,950.34 : x
  2. Step 2: Convert to fraction form
    123,540.18/170,480.88 = 66,950.34/x
  3. Step 3: Cross multiply
    123,540.18x = 170,480.88 × 66,950.34
  4. Step 4: Simplify right side
    123,540.18x = 11,413,752,879.50
  5. Step 5: Solve for x
    x = 11,413,752,879.50/123,540.18
  6. Step 6: Final answer
    x = 92,388.99

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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.