Home / 135,479.92-186,924.10-78,114.73

Finding the Fourth Proportional to 135,479.92, 186,924.10 and 78,114.73

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Solution

The fourth proportional to 135,479.92, 186,924.10 and 78,114.73 is: 107,776.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,479.92 : 186,924.10 = 78,114.73 : x
  2. Step 2: Convert to fraction form
    135,479.92/186,924.10 = 78,114.73/x
  3. Step 3: Cross multiply
    135,479.92x = 186,924.10 × 78,114.73
  4. Step 4: Simplify right side
    135,479.92x = 14,601,525,601.99
  5. Step 5: Solve for x
    x = 14,601,525,601.99/135,479.92
  6. Step 6: Final answer
    x = 107,776.31

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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.