Home / 121,460.76-167,542.36-78,372.81

Finding the Fourth Proportional to 121,460.76, 167,542.36 and 78,372.81

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Solution

The fourth proportional to 121,460.76, 167,542.36 and 78,372.81 is: 108,107.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,460.76 : 167,542.36 = 78,372.81 : x
  2. Step 2: Convert to fraction form
    121,460.76/167,542.36 = 78,372.81/x
  3. Step 3: Cross multiply
    121,460.76x = 167,542.36 × 78,372.81
  4. Step 4: Simplify right side
    121,460.76x = 13,130,765,351.30
  5. Step 5: Solve for x
    x = 13,130,765,351.30/121,460.76
  6. Step 6: Final answer
    x = 108,107.06

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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.