Home / 199,712,644.80-299,568,967.20-78,548,049.60

Finding the Fourth Proportional to 199,712,644.80, 299,568,967.20 and 78,548,049.60

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Solution

The fourth proportional to 199,712,644.80, 299,568,967.20 and 78,548,049.60 is: 117,822,074.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,712,644.80 : 299,568,967.20 = 78,548,049.60 : x
  2. Step 2: Convert to fraction form
    199,712,644.80/299,568,967.20 = 78,548,049.60/x
  3. Step 3: Cross multiply
    199,712,644.80x = 299,568,967.20 × 78,548,049.60
  4. Step 4: Simplify right side
    199,712,644.80x = 23,530,558,094,246,372
  5. Step 5: Solve for x
    x = 23,530,558,094,246,372/199,712,644.80
  6. Step 6: Final answer
    x = 117,822,074.40

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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.