Home / 120,026.55-180,039.88-31,279.83

Finding the Fourth Proportional to 120,026.55, 180,039.88 and 31,279.83

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Solution

The fourth proportional to 120,026.55, 180,039.88 and 31,279.83 is: 46,919.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,026.55 : 180,039.88 = 31,279.83 : x
  2. Step 2: Convert to fraction form
    120,026.55/180,039.88 = 31,279.83/x
  3. Step 3: Cross multiply
    120,026.55x = 180,039.88 × 31,279.83
  4. Step 4: Simplify right side
    120,026.55x = 5,631,616,839.62
  5. Step 5: Solve for x
    x = 5,631,616,839.62/120,026.55
  6. Step 6: Final answer
    x = 46,919.76

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1.5x scale

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.