Home / 190,454.90-285,718.46-76,611.42

Finding the Fourth Proportional to 190,454.90, 285,718.46 and 76,611.42

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Solution

The fourth proportional to 190,454.90, 285,718.46 and 76,611.42 is: 114,931.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,454.90 : 285,718.46 = 76,611.42 : x
  2. Step 2: Convert to fraction form
    190,454.90/285,718.46 = 76,611.42/x
  3. Step 3: Cross multiply
    190,454.90x = 285,718.46 × 76,611.42
  4. Step 4: Simplify right side
    190,454.90x = 21,889,296,940.81
  5. Step 5: Solve for x
    x = 21,889,296,940.81/190,454.90
  6. Step 6: Final answer
    x = 114,931.66

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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.