Home / 209,090.80-313,588.92-96,709.36

Finding the Fourth Proportional to 209,090.80, 313,588.92 and 96,709.36

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Solution

The fourth proportional to 209,090.80, 313,588.92 and 96,709.36 is: 145,042.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,090.80 : 313,588.92 = 96,709.36 : x
  2. Step 2: Convert to fraction form
    209,090.80/313,588.92 = 96,709.36/x
  3. Step 3: Cross multiply
    209,090.80x = 313,588.92 × 96,709.36
  4. Step 4: Simplify right side
    209,090.80x = 30,326,983,756.29
  5. Step 5: Solve for x
    x = 30,326,983,756.29/209,090.80
  6. Step 6: Final answer
    x = 145,042.17

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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.