Home / 199,051,120,556.88-298,789,156,572.30-85,786,742,961.96

Finding the Fourth Proportional to 199,051,120,556.88, 298,789,156,572.30 and 85,786,742,961.96

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Solution

The fourth proportional to 199,051,120,556.88, 298,789,156,572.30 and 85,786,742,961.96 is: 128,771,686,906.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,051,120,556.88 : 298,789,156,572.30 = 85,786,742,961.96 : x
  2. Step 2: Convert to fraction form
    199,051,120,556.88/298,789,156,572.30 = 85,786,742,961.96/x
  3. Step 3: Cross multiply
    199,051,120,556.88x = 298,789,156,572.30 × 85,786,742,961.96
  4. Step 4: Simplify right side
    199,051,120,556.88x = 25,632,148,574,688,723,861,504
  5. Step 5: Solve for x
    x = 25,632,148,574,688,723,861,504/199,051,120,556.88
  6. Step 6: Final answer
    x = 128,771,686,906.25

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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.