Home / 149,249.09-205,897.21-100,835.46

Finding the Fourth Proportional to 149,249.09, 205,897.21 and 100,835.46

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Solution

The fourth proportional to 149,249.09, 205,897.21 and 100,835.46 is: 139,107.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,249.09 : 205,897.21 = 100,835.46 : x
  2. Step 2: Convert to fraction form
    149,249.09/205,897.21 = 100,835.46/x
  3. Step 3: Cross multiply
    149,249.09x = 205,897.21 × 100,835.46
  4. Step 4: Simplify right side
    149,249.09x = 20,761,739,630.98
  5. Step 5: Solve for x
    x = 20,761,739,630.98/149,249.09
  6. Step 6: Final answer
    x = 139,107.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.