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Finding the Fourth Proportional to 139,013.37, 208,358.73 and 63,975.96

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Solution

The fourth proportional to 139,013.37, 208,358.73 and 63,975.96 is: 95,889.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,013.37 : 208,358.73 = 63,975.96 : x
  2. Step 2: Convert to fraction form
    139,013.37/208,358.73 = 63,975.96/x
  3. Step 3: Cross multiply
    139,013.37x = 208,358.73 × 63,975.96
  4. Step 4: Simplify right side
    139,013.37x = 13,329,949,776.13
  5. Step 5: Solve for x
    x = 13,329,949,776.13/139,013.37
  6. Step 6: Final answer
    x = 95,889.70

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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.