Home / 280,131.75-420,201.29-93,143.25

Finding the Fourth Proportional to 280,131.75, 420,201.29 and 93,143.25

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Solution

The fourth proportional to 280,131.75, 420,201.29 and 93,143.25 is: 139,716.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,131.75 : 420,201.29 = 93,143.25 : x
  2. Step 2: Convert to fraction form
    280,131.75/420,201.29 = 93,143.25/x
  3. Step 3: Cross multiply
    280,131.75x = 420,201.29 × 93,143.25
  4. Step 4: Simplify right side
    280,131.75x = 39,138,913,339.08
  5. Step 5: Solve for x
    x = 39,138,913,339.08/280,131.75
  6. Step 6: Final answer
    x = 139,716.09

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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.