Home / 239,861.25-331,037.69-139,259.25

Finding the Fourth Proportional to 239,861.25, 331,037.69 and 139,259.25

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Solution

The fourth proportional to 239,861.25, 331,037.69 and 139,259.25 is: 192,194.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,861.25 : 331,037.69 = 139,259.25 : x
  2. Step 2: Convert to fraction form
    239,861.25/331,037.69 = 139,259.25/x
  3. Step 3: Cross multiply
    239,861.25x = 331,037.69 × 139,259.25
  4. Step 4: Simplify right side
    239,861.25x = 46,100,059,734.84
  5. Step 5: Solve for x
    x = 46,100,059,734.84/239,861.25
  6. Step 6: Final answer
    x = 192,194.69

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1.5x scale

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.