Home / 280,119.80-420,179.70-93,131.30

Finding the Fourth Proportional to 280,119.80, 420,179.70 and 93,131.30

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Solution

The fourth proportional to 280,119.80, 420,179.70 and 93,131.30 is: 139,696.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,119.80 : 420,179.70 = 93,131.30 : x
  2. Step 2: Convert to fraction form
    280,119.80/420,179.70 = 93,131.30/x
  3. Step 3: Cross multiply
    280,119.80x = 420,179.70 × 93,131.30
  4. Step 4: Simplify right side
    280,119.80x = 39,131,881,694.61
  5. Step 5: Solve for x
    x = 39,131,881,694.61/280,119.80
  6. Step 6: Final answer
    x = 139,696.95

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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.