Home / 190,831.61-286,378.62-66,172.61

Finding the Fourth Proportional to 190,831.61, 286,378.62 and 66,172.61

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Solution

The fourth proportional to 190,831.61, 286,378.62 and 66,172.61 is: 99,304.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,831.61 : 286,378.62 = 66,172.61 : x
  2. Step 2: Convert to fraction form
    190,831.61/286,378.62 = 66,172.61/x
  3. Step 3: Cross multiply
    190,831.61x = 286,378.62 × 66,172.61
  4. Step 4: Simplify right side
    190,831.61x = 18,950,420,733.60
  5. Step 5: Solve for x
    x = 18,950,420,733.60/190,831.61
  6. Step 6: Final answer
    x = 99,304.41

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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.