Home / 120,571,245.60-180,856,868.40-115,028,512.80

Finding the Fourth Proportional to 120,571,245.60, 180,856,868.40 and 115,028,512.80

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Solution

The fourth proportional to 120,571,245.60, 180,856,868.40 and 115,028,512.80 is: 172,542,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,571,245.60 : 180,856,868.40 = 115,028,512.80 : x
  2. Step 2: Convert to fraction form
    120,571,245.60/180,856,868.40 = 115,028,512.80/x
  3. Step 3: Cross multiply
    120,571,245.60x = 180,856,868.40 × 115,028,512.80
  4. Step 4: Simplify right side
    120,571,245.60x = 20,803,696,601,717,316
  5. Step 5: Solve for x
    x = 20,803,696,601,717,316/120,571,245.60
  6. Step 6: Final answer
    x = 172,542,769.20

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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.