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Finding the Fourth Proportional to 139,137.66, 208,664.72 and 59,174.96

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Solution

The fourth proportional to 139,137.66, 208,664.72 and 59,174.96 is: 88,744.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,137.66 : 208,664.72 = 59,174.96 : x
  2. Step 2: Convert to fraction form
    139,137.66/208,664.72 = 59,174.96/x
  3. Step 3: Cross multiply
    139,137.66x = 208,664.72 × 59,174.96
  4. Step 4: Simplify right side
    139,137.66x = 12,347,725,120.21
  5. Step 5: Solve for x
    x = 12,347,725,120.21/139,137.66
  6. Step 6: Final answer
    x = 88,744.67

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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.