Home / 123,288.45-170,135.15-69,575.73

Finding the Fourth Proportional to 123,288.45, 170,135.15 and 69,575.73

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Solution

The fourth proportional to 123,288.45, 170,135.15 and 69,575.73 is: 96,012.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,288.45 : 170,135.15 = 69,575.73 : x
  2. Step 2: Convert to fraction form
    123,288.45/170,135.15 = 69,575.73/x
  3. Step 3: Cross multiply
    123,288.45x = 170,135.15 × 69,575.73
  4. Step 4: Simplify right side
    123,288.45x = 11,837,276,912.03
  5. Step 5: Solve for x
    x = 11,837,276,912.03/123,288.45
  6. Step 6: Final answer
    x = 96,012.86

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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.