Home / 100,075.41-138,078.14-59,771.43

Finding the Fourth Proportional to 100,075.41, 138,078.14 and 59,771.43

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Solution

The fourth proportional to 100,075.41, 138,078.14 and 59,771.43 is: 82,469.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,075.41 : 138,078.14 = 59,771.43 : x
  2. Step 2: Convert to fraction form
    100,075.41/138,078.14 = 59,771.43/x
  3. Step 3: Cross multiply
    100,075.41x = 138,078.14 × 59,771.43
  4. Step 4: Simplify right side
    100,075.41x = 8,253,127,580.68
  5. Step 5: Solve for x
    x = 8,253,127,580.68/100,075.41
  6. Step 6: Final answer
    x = 82,469.09

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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.