Home / 123,194.40-170,007.90-66,605.78

Finding the Fourth Proportional to 123,194.40, 170,007.90 and 66,605.78

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Solution

The fourth proportional to 123,194.40, 170,007.90 and 66,605.78 is: 91,915.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,194.40 : 170,007.90 = 66,605.78 : x
  2. Step 2: Convert to fraction form
    123,194.40/170,007.90 = 66,605.78/x
  3. Step 3: Cross multiply
    123,194.40x = 170,007.90 × 66,605.78
  4. Step 4: Simplify right side
    123,194.40x = 11,323,508,785.66
  5. Step 5: Solve for x
    x = 11,323,508,785.66/123,194.40
  6. Step 6: Final answer
    x = 91,915.78

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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.