Home / 142,450.56-213,870.24-72,379.44

Finding the Fourth Proportional to 142,450.56, 213,870.24 and 72,379.44

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Solution

The fourth proportional to 142,450.56, 213,870.24 and 72,379.44 is: 108,667.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,450.56 : 213,870.24 = 72,379.44 : x
  2. Step 2: Convert to fraction form
    142,450.56/213,870.24 = 72,379.44/x
  3. Step 3: Cross multiply
    142,450.56x = 213,870.24 × 72,379.44
  4. Step 4: Simplify right side
    142,450.56x = 15,479,808,203.87
  5. Step 5: Solve for x
    x = 15,479,808,203.87/142,450.56
  6. Step 6: Final answer
    x = 108,667.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.