Home / 100,015.80-138,034.86-57,576.12

Finding the Fourth Proportional to 100,015.80, 138,034.86 and 57,576.12

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Solution

The fourth proportional to 100,015.80, 138,034.86 and 57,576.12 is: 79,462.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,015.80 : 138,034.86 = 57,576.12 : x
  2. Step 2: Convert to fraction form
    100,015.80/138,034.86 = 57,576.12/x
  3. Step 3: Cross multiply
    100,015.80x = 138,034.86 × 57,576.12
  4. Step 4: Simplify right side
    100,015.80x = 7,947,511,663.54
  5. Step 5: Solve for x
    x = 7,947,511,663.54/100,015.80
  6. Step 6: Final answer
    x = 79,462.56

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1.5x scale

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.