Home / 123,217.51-170,040.03-66,628.75

Finding the Fourth Proportional to 123,217.51, 170,040.03 and 66,628.75

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Solution

The fourth proportional to 123,217.51, 170,040.03 and 66,628.75 is: 91,947.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,217.51 : 170,040.03 = 66,628.75 : x
  2. Step 2: Convert to fraction form
    123,217.51/170,040.03 = 66,628.75/x
  3. Step 3: Cross multiply
    123,217.51x = 170,040.03 × 66,628.75
  4. Step 4: Simplify right side
    123,217.51x = 11,329,554,648.86
  5. Step 5: Solve for x
    x = 11,329,554,648.86/123,217.51
  6. Step 6: Final answer
    x = 91,947.60

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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.