Home / 139,936.37-209,925.41-45,135.39

Finding the Fourth Proportional to 139,936.37, 209,925.41 and 45,135.39

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Solution

The fourth proportional to 139,936.37, 209,925.41 and 45,135.39 is: 67,709.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,936.37 : 209,925.41 = 45,135.39 : x
  2. Step 2: Convert to fraction form
    139,936.37/209,925.41 = 45,135.39/x
  3. Step 3: Cross multiply
    139,936.37x = 209,925.41 × 45,135.39
  4. Step 4: Simplify right side
    139,936.37x = 9,475,064,201.63
  5. Step 5: Solve for x
    x = 9,475,064,201.63/139,936.37
  6. Step 6: Final answer
    x = 67,709.80

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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.