Home / 141,985,961.20-212,601,028.20-90,589,711.60

Finding the Fourth Proportional to 141,985,961.20, 212,601,028.20 and 90,589,711.60

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Solution

The fourth proportional to 141,985,961.20, 212,601,028.20 and 90,589,711.60 is: 135,643,451.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,985,961.20 : 212,601,028.20 = 90,589,711.60 : x
  2. Step 2: Convert to fraction form
    141,985,961.20/212,601,028.20 = 90,589,711.60/x
  3. Step 3: Cross multiply
    141,985,961.20x = 212,601,028.20 × 90,589,711.60
  4. Step 4: Simplify right side
    141,985,961.20x = 19,259,465,830,501,464
  5. Step 5: Solve for x
    x = 19,259,465,830,501,464/141,985,961.20
  6. Step 6: Final answer
    x = 135,643,451.42

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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.