Home / 142,297.34-196,370.26-78,634.58

Finding the Fourth Proportional to 142,297.34, 196,370.26 and 78,634.58

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Solution

The fourth proportional to 142,297.34, 196,370.26 and 78,634.58 is: 108,515.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,297.34 : 196,370.26 = 78,634.58 : x
  2. Step 2: Convert to fraction form
    142,297.34/196,370.26 = 78,634.58/x
  3. Step 3: Cross multiply
    142,297.34x = 196,370.26 × 78,634.58
  4. Step 4: Simplify right side
    142,297.34x = 15,441,491,741.15
  5. Step 5: Solve for x
    x = 15,441,491,741.15/142,297.34
  6. Step 6: Final answer
    x = 108,515.68

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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.