Home / 138,149,986.88-190,733,020.92-87,942,534.27

Finding the Fourth Proportional to 138,149,986.88, 190,733,020.92 and 87,942,534.27

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Solution

The fourth proportional to 138,149,986.88, 190,733,020.92 and 87,942,534.27 is: 121,415,467.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,149,986.88 : 190,733,020.92 = 87,942,534.27 : x
  2. Step 2: Convert to fraction form
    138,149,986.88/190,733,020.92 = 87,942,534.27/x
  3. Step 3: Cross multiply
    138,149,986.88x = 190,733,020.92 × 87,942,534.27
  4. Step 4: Simplify right side
    138,149,986.88x = 16,773,545,227,993,880
  5. Step 5: Solve for x
    x = 16,773,545,227,993,880/138,149,986.88
  6. Step 6: Final answer
    x = 121,415,467.40

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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.