Home / 155,118,020.36-214,062,815.88-85,504,563.78

Finding the Fourth Proportional to 155,118,020.36, 214,062,815.88 and 85,504,563.78

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Solution

The fourth proportional to 155,118,020.36, 214,062,815.88 and 85,504,563.78 is: 117,996,269.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,118,020.36 : 214,062,815.88 = 85,504,563.78 : x
  2. Step 2: Convert to fraction form
    155,118,020.36/214,062,815.88 = 85,504,563.78/x
  3. Step 3: Cross multiply
    155,118,020.36x = 214,062,815.88 × 85,504,563.78
  4. Step 4: Simplify right side
    155,118,020.36x = 18,303,347,693,337,856
  5. Step 5: Solve for x
    x = 18,303,347,693,337,856/155,118,020.36
  6. Step 6: Final answer
    x = 117,996,269.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.