Home / 142,294.22-196,378.44-78,644.31

Finding the Fourth Proportional to 142,294.22, 196,378.44 and 78,644.31

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Solution

The fourth proportional to 142,294.22, 196,378.44 and 78,644.31 is: 108,536.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,294.22 : 196,378.44 = 78,644.31 : x
  2. Step 2: Convert to fraction form
    142,294.22/196,378.44 = 78,644.31/x
  3. Step 3: Cross multiply
    142,294.22x = 196,378.44 × 78,644.31
  4. Step 4: Simplify right side
    142,294.22x = 15,444,046,912.68
  5. Step 5: Solve for x
    x = 15,444,046,912.68/142,294.22
  6. Step 6: Final answer
    x = 108,536.01

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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.