Home / 120,829.40-181,268.40-101,243.60

Finding the Fourth Proportional to 120,829.40, 181,268.40 and 101,243.60

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Solution

The fourth proportional to 120,829.40, 181,268.40 and 101,243.60 is: 151,885.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,829.40 : 181,268.40 = 101,243.60 : x
  2. Step 2: Convert to fraction form
    120,829.40/181,268.40 = 101,243.60/x
  3. Step 3: Cross multiply
    120,829.40x = 181,268.40 × 101,243.60
  4. Step 4: Simplify right side
    120,829.40x = 18,352,265,382.24
  5. Step 5: Solve for x
    x = 18,352,265,382.24/120,829.40
  6. Step 6: Final answer
    x = 151,885.76

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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.