Home / 139,276.73-192,206.30-78,846.28

Finding the Fourth Proportional to 139,276.73, 192,206.30 and 78,846.28

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Solution

The fourth proportional to 139,276.73, 192,206.30 and 78,846.28 is: 108,810.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,276.73 : 192,206.30 = 78,846.28 : x
  2. Step 2: Convert to fraction form
    139,276.73/192,206.30 = 78,846.28/x
  3. Step 3: Cross multiply
    139,276.73x = 192,206.30 × 78,846.28
  4. Step 4: Simplify right side
    139,276.73x = 15,154,751,747.56
  5. Step 5: Solve for x
    x = 15,154,751,747.56/139,276.73
  6. Step 6: Final answer
    x = 108,810.36

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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.