Home / 142,146.75-213,148.83-47,343.61

Finding the Fourth Proportional to 142,146.75, 213,148.83 and 47,343.61

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Solution

The fourth proportional to 142,146.75, 213,148.83 and 47,343.61 is: 70,991.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,146.75 : 213,148.83 = 47,343.61 : x
  2. Step 2: Convert to fraction form
    142,146.75/213,148.83 = 47,343.61/x
  3. Step 3: Cross multiply
    142,146.75x = 213,148.83 × 47,343.61
  4. Step 4: Simplify right side
    142,146.75x = 10,091,235,257.14
  5. Step 5: Solve for x
    x = 10,091,235,257.14/142,146.75
  6. Step 6: Final answer
    x = 70,991.67

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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.