Home / 139,428.18-209,142.27-34,247.12

Finding the Fourth Proportional to 139,428.18, 209,142.27 and 34,247.12

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Solution

The fourth proportional to 139,428.18, 209,142.27 and 34,247.12 is: 51,370.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,428.18 : 209,142.27 = 34,247.12 : x
  2. Step 2: Convert to fraction form
    139,428.18/209,142.27 = 34,247.12/x
  3. Step 3: Cross multiply
    139,428.18x = 209,142.27 × 34,247.12
  4. Step 4: Simplify right side
    139,428.18x = 7,162,519,372.05
  5. Step 5: Solve for x
    x = 7,162,519,372.05/139,428.18
  6. Step 6: Final answer
    x = 51,370.67

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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.