Home / 120,571,279.60-180,856,919.40-115,028,546.80

Finding the Fourth Proportional to 120,571,279.60, 180,856,919.40 and 115,028,546.80

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Solution

The fourth proportional to 120,571,279.60, 180,856,919.40 and 115,028,546.80 is: 172,542,820.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,571,279.60 : 180,856,919.40 = 115,028,546.80 : x
  2. Step 2: Convert to fraction form
    120,571,279.60/180,856,919.40 = 115,028,546.80/x
  3. Step 3: Cross multiply
    120,571,279.60x = 180,856,919.40 × 115,028,546.80
  4. Step 4: Simplify right side
    120,571,279.60x = 20,803,708,617,306,728
  5. Step 5: Solve for x
    x = 20,803,708,617,306,728/120,571,279.60
  6. Step 6: Final answer
    x = 172,542,820.20

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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.