Home / 139,139.80-208,431.44-64,157.28

Finding the Fourth Proportional to 139,139.80, 208,431.44 and 64,157.28

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Solution

The fourth proportional to 139,139.80, 208,431.44 and 64,157.28 is: 96,107.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,139.80 : 208,431.44 = 64,157.28 : x
  2. Step 2: Convert to fraction form
    139,139.80/208,431.44 = 64,157.28/x
  3. Step 3: Cross multiply
    139,139.80x = 208,431.44 × 64,157.28
  4. Step 4: Simplify right side
    139,139.80x = 13,372,394,256.88
  5. Step 5: Solve for x
    x = 13,372,394,256.88/139,139.80
  6. Step 6: Final answer
    x = 96,107.61

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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.