Home / 142,046.64-196,028.61-78,388.53

Finding the Fourth Proportional to 142,046.64, 196,028.61 and 78,388.53

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Solution

The fourth proportional to 142,046.64, 196,028.61 and 78,388.53 is: 108,178.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,046.64 : 196,028.61 = 78,388.53 : x
  2. Step 2: Convert to fraction form
    142,046.64/196,028.61 = 78,388.53/x
  3. Step 3: Cross multiply
    142,046.64x = 196,028.61 × 78,388.53
  4. Step 4: Simplify right side
    142,046.64x = 15,366,394,575.84
  5. Step 5: Solve for x
    x = 15,366,394,575.84/142,046.64
  6. Step 6: Final answer
    x = 108,178.51

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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.