Home / 205,523.23-307,509.67-121,329.20

Finding the Fourth Proportional to 205,523.23, 307,509.67 and 121,329.20

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Solution

The fourth proportional to 205,523.23, 307,509.67 and 121,329.20 is: 181,536.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,523.23 : 307,509.67 = 121,329.20 : x
  2. Step 2: Convert to fraction form
    205,523.23/307,509.67 = 121,329.20/x
  3. Step 3: Cross multiply
    205,523.23x = 307,509.67 × 121,329.20
  4. Step 4: Simplify right side
    205,523.23x = 37,309,902,253.36
  5. Step 5: Solve for x
    x = 37,309,902,253.36/205,523.23
  6. Step 6: Final answer
    x = 181,536.18

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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.