Home / 123,640.30-170,575.32-80,670.34

Finding the Fourth Proportional to 123,640.30, 170,575.32 and 80,670.34

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Solution

The fourth proportional to 123,640.30, 170,575.32 and 80,670.34 is: 111,293.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,640.30 : 170,575.32 = 80,670.34 : x
  2. Step 2: Convert to fraction form
    123,640.30/170,575.32 = 80,670.34/x
  3. Step 3: Cross multiply
    123,640.30x = 170,575.32 × 80,670.34
  4. Step 4: Simplify right side
    123,640.30x = 13,760,369,060.01
  5. Step 5: Solve for x
    x = 13,760,369,060.01/123,640.30
  6. Step 6: Final answer
    x = 111,293.56

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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.