Home / 100,103.42-138,158.26-57,083.00

Finding the Fourth Proportional to 100,103.42, 138,158.26 and 57,083.00

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Solution

The fourth proportional to 100,103.42, 138,158.26 and 57,083.00 is: 78,783.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,103.42 : 138,158.26 = 57,083.00 : x
  2. Step 2: Convert to fraction form
    100,103.42/138,158.26 = 57,083.00/x
  3. Step 3: Cross multiply
    100,103.42x = 138,158.26 × 57,083.00
  4. Step 4: Simplify right side
    100,103.42x = 7,886,488,287.79
  5. Step 5: Solve for x
    x = 7,886,488,287.79/100,103.42
  6. Step 6: Final answer
    x = 78,783.41

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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.