Home / 120,516.36-166,315.52-66,071.64

Finding the Fourth Proportional to 120,516.36, 166,315.52 and 66,071.64

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Solution

The fourth proportional to 120,516.36, 166,315.52 and 66,071.64 is: 91,180.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,516.36 : 166,315.52 = 66,071.64 : x
  2. Step 2: Convert to fraction form
    120,516.36/166,315.52 = 66,071.64/x
  3. Step 3: Cross multiply
    120,516.36x = 166,315.52 × 66,071.64
  4. Step 4: Simplify right side
    120,516.36x = 10,988,739,163.85
  5. Step 5: Solve for x
    x = 10,988,739,163.85/120,516.36
  6. Step 6: Final answer
    x = 91,180.48

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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.