Home / 139,187.85-208,781.19-50,420.58

Finding the Fourth Proportional to 139,187.85, 208,781.19 and 50,420.58

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Solution

The fourth proportional to 139,187.85, 208,781.19 and 50,420.58 is: 75,630.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,187.85 : 208,781.19 = 50,420.58 : x
  2. Step 2: Convert to fraction form
    139,187.85/208,781.19 = 50,420.58/x
  3. Step 3: Cross multiply
    139,187.85x = 208,781.19 × 50,420.58
  4. Step 4: Simplify right side
    139,187.85x = 10,526,868,692.89
  5. Step 5: Solve for x
    x = 10,526,868,692.89/139,187.85
  6. Step 6: Final answer
    x = 75,630.66

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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.