Home / 120,026.49-180,039.79-31,279.77

Finding the Fourth Proportional to 120,026.49, 180,039.79 and 31,279.77

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Solution

The fourth proportional to 120,026.49, 180,039.79 and 31,279.77 is: 46,919.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,026.49 : 180,039.79 = 31,279.77 : x
  2. Step 2: Convert to fraction form
    120,026.49/180,039.79 = 31,279.77/x
  3. Step 3: Cross multiply
    120,026.49x = 180,039.79 × 31,279.77
  4. Step 4: Simplify right side
    120,026.49x = 5,631,603,222.05
  5. Step 5: Solve for x
    x = 5,631,603,222.05/120,026.49
  6. Step 6: Final answer
    x = 46,919.67

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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.