Home / 205,247.86-307,969.26-142,165.06

Finding the Fourth Proportional to 205,247.86, 307,969.26 and 142,165.06

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Solution

The fourth proportional to 205,247.86, 307,969.26 and 142,165.06 is: 213,315.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,247.86 : 307,969.26 = 142,165.06 : x
  2. Step 2: Convert to fraction form
    205,247.86/307,969.26 = 142,165.06/x
  3. Step 3: Cross multiply
    205,247.86x = 307,969.26 × 142,165.06
  4. Step 4: Simplify right side
    205,247.86x = 43,782,467,023.01
  5. Step 5: Solve for x
    x = 43,782,467,023.01/205,247.86
  6. Step 6: Final answer
    x = 213,315.10

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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.