Home / 111,559.28-166,920.66-66,415.51

Finding the Fourth Proportional to 111,559.28, 166,920.66 and 66,415.51

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Solution

The fourth proportional to 111,559.28, 166,920.66 and 66,415.51 is: 99,374.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,559.28 : 166,920.66 = 66,415.51 : x
  2. Step 2: Convert to fraction form
    111,559.28/166,920.66 = 66,415.51/x
  3. Step 3: Cross multiply
    111,559.28x = 166,920.66 × 66,415.51
  4. Step 4: Simplify right side
    111,559.28x = 11,086,120,763.44
  5. Step 5: Solve for x
    x = 11,086,120,763.44/111,559.28
  6. Step 6: Final answer
    x = 99,374.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.