Home / 149,140.31-205,813.67-82,072.31

Finding the Fourth Proportional to 149,140.31, 205,813.67 and 82,072.31

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Solution

The fourth proportional to 149,140.31, 205,813.67 and 82,072.31 is: 113,259.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,140.31 : 205,813.67 = 82,072.31 : x
  2. Step 2: Convert to fraction form
    149,140.31/205,813.67 = 82,072.31/x
  3. Step 3: Cross multiply
    149,140.31x = 205,813.67 × 82,072.31
  4. Step 4: Simplify right side
    149,140.31x = 16,891,603,430.65
  5. Step 5: Solve for x
    x = 16,891,603,430.65/149,140.31
  6. Step 6: Final answer
    x = 113,259.81

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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.