Home / 142,647.53-196,851.19-78,983.96

Finding the Fourth Proportional to 142,647.53, 196,851.19 and 78,983.96

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Solution

The fourth proportional to 142,647.53, 196,851.19 and 78,983.96 is: 108,996.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,647.53 : 196,851.19 = 78,983.96 : x
  2. Step 2: Convert to fraction form
    142,647.53/196,851.19 = 78,983.96/x
  3. Step 3: Cross multiply
    142,647.53x = 196,851.19 × 78,983.96
  4. Step 4: Simplify right side
    142,647.53x = 15,548,086,368.44
  5. Step 5: Solve for x
    x = 15,548,086,368.44/142,647.53
  6. Step 6: Final answer
    x = 108,996.53

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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.