Home / 209,986.20-314,897.40-91,576.80

Finding the Fourth Proportional to 209,986.20, 314,897.40 and 91,576.80

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Solution

The fourth proportional to 209,986.20, 314,897.40 and 91,576.80 is: 137,329.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,986.20 : 314,897.40 = 91,576.80 : x
  2. Step 2: Convert to fraction form
    209,986.20/314,897.40 = 91,576.80/x
  3. Step 3: Cross multiply
    209,986.20x = 314,897.40 × 91,576.80
  4. Step 4: Simplify right side
    209,986.20x = 28,837,296,220.32
  5. Step 5: Solve for x
    x = 28,837,296,220.32/209,986.20
  6. Step 6: Final answer
    x = 137,329.48

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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.