Home / 138,120,588.48-190,606,383.36-76,240,910.64

Finding the Fourth Proportional to 138,120,588.48, 190,606,383.36 and 76,240,910.64

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Solution

The fourth proportional to 138,120,588.48, 190,606,383.36 and 76,240,910.64 is: 105,212,440.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,120,588.48 : 190,606,383.36 = 76,240,910.64 : x
  2. Step 2: Convert to fraction form
    138,120,588.48/190,606,383.36 = 76,240,910.64/x
  3. Step 3: Cross multiply
    138,120,588.48x = 190,606,383.36 × 76,240,910.64
  4. Step 4: Simplify right side
    138,120,588.48x = 14,532,004,241,163,344
  5. Step 5: Solve for x
    x = 14,532,004,241,163,344/138,120,588.48
  6. Step 6: Final answer
    x = 105,212,440.82

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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.