Home / 123,195.40-170,009.28-66,606.78

Finding the Fourth Proportional to 123,195.40, 170,009.28 and 66,606.78

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Solution

The fourth proportional to 123,195.40, 170,009.28 and 66,606.78 is: 91,917.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,195.40 : 170,009.28 = 66,606.78 : x
  2. Step 2: Convert to fraction form
    123,195.40/170,009.28 = 66,606.78/x
  3. Step 3: Cross multiply
    123,195.40x = 170,009.28 × 66,606.78
  4. Step 4: Simplify right side
    123,195.40x = 11,323,770,710.92
  5. Step 5: Solve for x
    x = 11,323,770,710.92/123,195.40
  6. Step 6: Final answer
    x = 91,917.16

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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.