Home / 128,775,101.20-193,162,651.80-42,526,819.60

Finding the Fourth Proportional to 128,775,101.20, 193,162,651.80 and 42,526,819.60

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Solution

The fourth proportional to 128,775,101.20, 193,162,651.80 and 42,526,819.60 is: 63,790,229.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,775,101.20 : 193,162,651.80 = 42,526,819.60 : x
  2. Step 2: Convert to fraction form
    128,775,101.20/193,162,651.80 = 42,526,819.60/x
  3. Step 3: Cross multiply
    128,775,101.20x = 193,162,651.80 × 42,526,819.60
  4. Step 4: Simplify right side
    128,775,101.20x = 8,214,593,246,556,216
  5. Step 5: Solve for x
    x = 8,214,593,246,556,216/128,775,101.20
  6. Step 6: Final answer
    x = 63,790,229.40

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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.