Home / 190,621.56-285,932.40-78,282.72

Finding the Fourth Proportional to 190,621.56, 285,932.40 and 78,282.72

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Solution

The fourth proportional to 190,621.56, 285,932.40 and 78,282.72 is: 117,424.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,621.56 : 285,932.40 = 78,282.72 : x
  2. Step 2: Convert to fraction form
    190,621.56/285,932.40 = 78,282.72/x
  3. Step 3: Cross multiply
    190,621.56x = 285,932.40 × 78,282.72
  4. Step 4: Simplify right side
    190,621.56x = 22,383,566,008.13
  5. Step 5: Solve for x
    x = 22,383,566,008.13/190,621.56
  6. Step 6: Final answer
    x = 117,424.10

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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.