Home / 121,467.24-167,707.50-78,550.56

Finding the Fourth Proportional to 121,467.24, 167,707.50 and 78,550.56

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Solution

The fourth proportional to 121,467.24, 167,707.50 and 78,550.56 is: 108,453.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,467.24 : 167,707.50 = 78,550.56 : x
  2. Step 2: Convert to fraction form
    121,467.24/167,707.50 = 78,550.56/x
  3. Step 3: Cross multiply
    121,467.24x = 167,707.50 × 78,550.56
  4. Step 4: Simplify right side
    121,467.24x = 13,173,518,041.20
  5. Step 5: Solve for x
    x = 13,173,518,041.20/121,467.24
  6. Step 6: Final answer
    x = 108,453.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.