Home / 142,378.56-196,466.40-78,707.52

Finding the Fourth Proportional to 142,378.56, 196,466.40 and 78,707.52

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Solution

The fourth proportional to 142,378.56, 196,466.40 and 78,707.52 is: 108,607.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,378.56 : 196,466.40 = 78,707.52 : x
  2. Step 2: Convert to fraction form
    142,378.56/196,466.40 = 78,707.52/x
  3. Step 3: Cross multiply
    142,378.56x = 196,466.40 × 78,707.52
  4. Step 4: Simplify right side
    142,378.56x = 15,463,383,107.33
  5. Step 5: Solve for x
    x = 15,463,383,107.33/142,378.56
  6. Step 6: Final answer
    x = 108,607.53

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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.