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Finding the Fourth Proportional to 139,474.36, 209,263.38 and 64,630.36

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Solution

The fourth proportional to 139,474.36, 209,263.38 and 64,630.36 is: 96,969.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,474.36 : 209,263.38 = 64,630.36 : x
  2. Step 2: Convert to fraction form
    139,474.36/209,263.38 = 64,630.36/x
  3. Step 3: Cross multiply
    139,474.36x = 209,263.38 × 64,630.36
  4. Step 4: Simplify right side
    139,474.36x = 13,524,767,584.22
  5. Step 5: Solve for x
    x = 13,524,767,584.22/139,474.36
  6. Step 6: Final answer
    x = 96,969.56

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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.