Home / 190,396.16-285,282.64-115,288.80

Finding the Fourth Proportional to 190,396.16, 285,282.64 and 115,288.80

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Solution

The fourth proportional to 190,396.16, 285,282.64 and 115,288.80 is: 172,744.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,396.16 : 285,282.64 = 115,288.80 : x
  2. Step 2: Convert to fraction form
    190,396.16/285,282.64 = 115,288.80/x
  3. Step 3: Cross multiply
    190,396.16x = 285,282.64 × 115,288.80
  4. Step 4: Simplify right side
    190,396.16x = 32,889,893,226.43
  5. Step 5: Solve for x
    x = 32,889,893,226.43/190,396.16
  6. Step 6: Final answer
    x = 172,744.52

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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.