Home / 144,804.31-199,835.36-81,139.75

Finding the Fourth Proportional to 144,804.31, 199,835.36 and 81,139.75

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Solution

The fourth proportional to 144,804.31, 199,835.36 and 81,139.75 is: 111,975.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,804.31 : 199,835.36 = 81,139.75 : x
  2. Step 2: Convert to fraction form
    144,804.31/199,835.36 = 81,139.75/x
  3. Step 3: Cross multiply
    144,804.31x = 199,835.36 × 81,139.75
  4. Step 4: Simplify right side
    144,804.31x = 16,214,591,151.56
  5. Step 5: Solve for x
    x = 16,214,591,151.56/144,804.31
  6. Step 6: Final answer
    x = 111,975.89

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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.