Home / 142,370.56-196,462.93-78,704.56

Finding the Fourth Proportional to 142,370.56, 196,462.93 and 78,704.56

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Solution

The fourth proportional to 142,370.56, 196,462.93 and 78,704.56 is: 108,607.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,370.56 : 196,462.93 = 78,704.56 : x
  2. Step 2: Convert to fraction form
    142,370.56/196,462.93 = 78,704.56/x
  3. Step 3: Cross multiply
    142,370.56x = 196,462.93 × 78,704.56
  4. Step 4: Simplify right side
    142,370.56x = 15,462,527,553.25
  5. Step 5: Solve for x
    x = 15,462,527,553.25/142,370.56
  6. Step 6: Final answer
    x = 108,607.62

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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.