Home / 209,075.22-313,426.92-90,681.96

Finding the Fourth Proportional to 209,075.22, 313,426.92 and 90,681.96

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Solution

The fourth proportional to 209,075.22, 313,426.92 and 90,681.96 is: 135,942.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,075.22 : 313,426.92 = 90,681.96 : x
  2. Step 2: Convert to fraction form
    209,075.22/313,426.92 = 90,681.96/x
  3. Step 3: Cross multiply
    209,075.22x = 313,426.92 × 90,681.96
  4. Step 4: Simplify right side
    209,075.22x = 28,422,167,422.36
  5. Step 5: Solve for x
    x = 28,422,167,422.36/209,075.22
  6. Step 6: Final answer
    x = 135,942.31

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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.