Home / 149,149.38-205,830.27-81,166.98

Finding the Fourth Proportional to 149,149.38, 205,830.27 and 81,166.98

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Solution

The fourth proportional to 149,149.38, 205,830.27 and 81,166.98 is: 112,012.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,149.38 : 205,830.27 = 81,166.98 : x
  2. Step 2: Convert to fraction form
    149,149.38/205,830.27 = 81,166.98/x
  3. Step 3: Cross multiply
    149,149.38x = 205,830.27 × 81,166.98
  4. Step 4: Simplify right side
    149,149.38x = 16,706,621,408.48
  5. Step 5: Solve for x
    x = 16,706,621,408.48/149,149.38
  6. Step 6: Final answer
    x = 112,012.68

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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.