Home / 155,118,019.80-214,062,815.25-85,504,563.21

Finding the Fourth Proportional to 155,118,019.80, 214,062,815.25 and 85,504,563.21

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Solution

The fourth proportional to 155,118,019.80, 214,062,815.25 and 85,504,563.21 is: 117,996,268.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,118,019.80 : 214,062,815.25 = 85,504,563.21 : x
  2. Step 2: Convert to fraction form
    155,118,019.80/214,062,815.25 = 85,504,563.21/x
  3. Step 3: Cross multiply
    155,118,019.80x = 214,062,815.25 × 85,504,563.21
  4. Step 4: Simplify right side
    155,118,019.80x = 18,303,347,517,454,176
  5. Step 5: Solve for x
    x = 18,303,347,517,454,176/155,118,019.80
  6. Step 6: Final answer
    x = 117,996,268.53

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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.