Home / 138,137,115.50-190,629,828.25-76,257,962.54

Finding the Fourth Proportional to 138,137,115.50, 190,629,828.25 and 76,257,962.54

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Solution

The fourth proportional to 138,137,115.50, 190,629,828.25 and 76,257,962.54 is: 105,236,324.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,137,115.50 : 190,629,828.25 = 76,257,962.54 : x
  2. Step 2: Convert to fraction form
    138,137,115.50/190,629,828.25 = 76,257,962.54/x
  3. Step 3: Cross multiply
    138,137,115.50x = 190,629,828.25 × 76,257,962.54
  4. Step 4: Simplify right side
    138,137,115.50x = 14,537,042,301,695,136
  5. Step 5: Solve for x
    x = 14,537,042,301,695,136/138,137,115.50
  6. Step 6: Final answer
    x = 105,236,324.42

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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.