Home / 123,189.36-170,001.20-66,600.72

Finding the Fourth Proportional to 123,189.36, 170,001.20 and 66,600.72

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Solution

The fourth proportional to 123,189.36, 170,001.20 and 66,600.72 is: 91,908.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,189.36 : 170,001.20 = 66,600.72 : x
  2. Step 2: Convert to fraction form
    123,189.36/170,001.20 = 66,600.72/x
  3. Step 3: Cross multiply
    123,189.36x = 170,001.20 × 66,600.72
  4. Step 4: Simplify right side
    123,189.36x = 11,322,202,320.86
  5. Step 5: Solve for x
    x = 11,322,202,320.86/123,189.36
  6. Step 6: Final answer
    x = 91,908.93

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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.