Home / 111,531.27-153,902.93-66,201.51

Finding the Fourth Proportional to 111,531.27, 153,902.93 and 66,201.51

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Solution

The fourth proportional to 111,531.27, 153,902.93 and 66,201.51 is: 91,352.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,531.27 : 153,902.93 = 66,201.51 : x
  2. Step 2: Convert to fraction form
    111,531.27/153,902.93 = 66,201.51/x
  3. Step 3: Cross multiply
    111,531.27x = 153,902.93 × 66,201.51
  4. Step 4: Simplify right side
    111,531.27x = 10,188,606,028.42
  5. Step 5: Solve for x
    x = 10,188,606,028.42/111,531.27
  6. Step 6: Final answer
    x = 91,352.01

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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.