Home / 138,260,459,099.75-190,830,128,003.43-84,055,489,883.33

Finding the Fourth Proportional to 138,260,459,099.75, 190,830,128,003.43 and 84,055,489,883.33

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Solution

The fourth proportional to 138,260,459,099.75, 190,830,128,003.43 and 84,055,489,883.33 is: 116,015,236,737.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,260,459,099.75 : 190,830,128,003.43 = 84,055,489,883.33 : x
  2. Step 2: Convert to fraction form
    138,260,459,099.75/190,830,128,003.43 = 84,055,489,883.33/x
  3. Step 3: Cross multiply
    138,260,459,099.75x = 190,830,128,003.43 × 84,055,489,883.33
  4. Step 4: Simplify right side
    138,260,459,099.75x = 16,040,319,893,826,879,619,072
  5. Step 5: Solve for x
    x = 16,040,319,893,826,879,619,072/138,260,459,099.75
  6. Step 6: Final answer
    x = 116,015,236,737.02

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1.5x scale

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.