Home / 100,113.83-138,110.40-57,647.75

Finding the Fourth Proportional to 100,113.83, 138,110.40 and 57,647.75

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Solution

The fourth proportional to 100,113.83, 138,110.40 and 57,647.75 is: 79,527.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,113.83 : 138,110.40 = 57,647.75 : x
  2. Step 2: Convert to fraction form
    100,113.83/138,110.40 = 57,647.75/x
  3. Step 3: Cross multiply
    100,113.83x = 138,110.40 × 57,647.75
  4. Step 4: Simplify right side
    100,113.83x = 7,961,753,121.05
  5. Step 5: Solve for x
    x = 7,961,753,121.05/100,113.83
  6. Step 6: Final answer
    x = 79,527.01

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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.