Home / 190,280.36-285,447.20-77,976.54

Finding the Fourth Proportional to 190,280.36, 285,447.20 and 77,976.54

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Solution

The fourth proportional to 190,280.36, 285,447.20 and 77,976.54 is: 116,975.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,280.36 : 285,447.20 = 77,976.54 : x
  2. Step 2: Convert to fraction form
    190,280.36/285,447.20 = 77,976.54/x
  3. Step 3: Cross multiply
    190,280.36x = 285,447.20 × 77,976.54
  4. Step 4: Simplify right side
    190,280.36x = 22,258,185,689.23
  5. Step 5: Solve for x
    x = 22,258,185,689.23/190,280.36
  6. Step 6: Final answer
    x = 116,975.74

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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.