Home / 120,583.20-180,831.60-61,399.20

Finding the Fourth Proportional to 120,583.20, 180,831.60 and 61,399.20

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Solution

The fourth proportional to 120,583.20, 180,831.60 and 61,399.20 is: 92,076.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,583.20 : 180,831.60 = 61,399.20 : x
  2. Step 2: Convert to fraction form
    120,583.20/180,831.60 = 61,399.20/x
  3. Step 3: Cross multiply
    120,583.20x = 180,831.60 × 61,399.20
  4. Step 4: Simplify right side
    120,583.20x = 11,102,915,574.72
  5. Step 5: Solve for x
    x = 11,102,915,574.72/120,583.20
  6. Step 6: Final answer
    x = 92,076.80

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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.