Home / 193,536,986.20-290,438,189.70-85,908,851.80

Finding the Fourth Proportional to 193,536,986.20, 290,438,189.70 and 85,908,851.80

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Solution

The fourth proportional to 193,536,986.20, 290,438,189.70 and 85,908,851.80 is: 128,922,186.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,536,986.20 : 290,438,189.70 = 85,908,851.80 : x
  2. Step 2: Convert to fraction form
    193,536,986.20/290,438,189.70 = 85,908,851.80/x
  3. Step 3: Cross multiply
    193,536,986.20x = 290,438,189.70 × 85,908,851.80
  4. Step 4: Simplify right side
    193,536,986.20x = 24,951,211,395,997,584
  5. Step 5: Solve for x
    x = 24,951,211,395,997,584/193,536,986.20
  6. Step 6: Final answer
    x = 128,922,186.33

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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.