Home / 139,372.36-209,130.05-68,293.67

Finding the Fourth Proportional to 139,372.36, 209,130.05 and 68,293.67

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Solution

The fourth proportional to 139,372.36, 209,130.05 and 68,293.67 is: 102,475.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,372.36 : 209,130.05 = 68,293.67 : x
  2. Step 2: Convert to fraction form
    139,372.36/209,130.05 = 68,293.67/x
  3. Step 3: Cross multiply
    139,372.36x = 209,130.05 × 68,293.67
  4. Step 4: Simplify right side
    139,372.36x = 14,282,257,490.77
  5. Step 5: Solve for x
    x = 14,282,257,490.77/139,372.36
  6. Step 6: Final answer
    x = 102,475.54

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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.