Home / 199,712,640.80-299,568,961.20-78,548,045.60

Finding the Fourth Proportional to 199,712,640.80, 299,568,961.20 and 78,548,045.60

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Solution

The fourth proportional to 199,712,640.80, 299,568,961.20 and 78,548,045.60 is: 117,822,068.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,712,640.80 : 299,568,961.20 = 78,548,045.60 : x
  2. Step 2: Convert to fraction form
    199,712,640.80/299,568,961.20 = 78,548,045.60/x
  3. Step 3: Cross multiply
    199,712,640.80x = 299,568,961.20 × 78,548,045.60
  4. Step 4: Simplify right side
    199,712,640.80x = 23,530,556,424,682,228
  5. Step 5: Solve for x
    x = 23,530,556,424,682,228/199,712,640.80
  6. Step 6: Final answer
    x = 117,822,068.40

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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.