Home / 138,147,704.30-190,642,844.88-75,423,800.21

Finding the Fourth Proportional to 138,147,704.30, 190,642,844.88 and 75,423,800.21

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Solution

The fourth proportional to 138,147,704.30, 190,642,844.88 and 75,423,800.21 is: 104,084,305.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,147,704.30 : 190,642,844.88 = 75,423,800.21 : x
  2. Step 2: Convert to fraction form
    138,147,704.30/190,642,844.88 = 75,423,800.21/x
  3. Step 3: Cross multiply
    138,147,704.30x = 190,642,844.88 × 75,423,800.21
  4. Step 4: Simplify right side
    138,147,704.30x = 14,379,007,843,115,372
  5. Step 5: Solve for x
    x = 14,379,007,843,115,372/138,147,704.30
  6. Step 6: Final answer
    x = 104,084,305.39

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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.