Home / 132,987,212,485.21-199,799,055,189.60-85,273,703,459.47

Finding the Fourth Proportional to 132,987,212,485.21, 199,799,055,189.60 and 85,273,703,459.47

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Solution

The fourth proportional to 132,987,212,485.21, 199,799,055,189.60 and 85,273,703,459.47 is: 128,114,613,919.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,987,212,485.21 : 199,799,055,189.60 = 85,273,703,459.47 : x
  2. Step 2: Convert to fraction form
    132,987,212,485.21/199,799,055,189.60 = 85,273,703,459.47/x
  3. Step 3: Cross multiply
    132,987,212,485.21x = 199,799,055,189.60 × 85,273,703,459.47
  4. Step 4: Simplify right side
    132,987,212,485.21x = 17,037,605,383,720,230,977,536
  5. Step 5: Solve for x
    x = 17,037,605,383,720,230,977,536/132,987,212,485.21
  6. Step 6: Final answer
    x = 128,114,613,919.10

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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.