Home / 100,133.56-138,137.64-57,667.48

Finding the Fourth Proportional to 100,133.56, 138,137.64 and 57,667.48

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Solution

The fourth proportional to 100,133.56, 138,137.64 and 57,667.48 is: 79,554.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,133.56 : 138,137.64 = 57,667.48 : x
  2. Step 2: Convert to fraction form
    100,133.56/138,137.64 = 57,667.48/x
  3. Step 3: Cross multiply
    100,133.56x = 138,137.64 × 57,667.48
  4. Step 4: Simplify right side
    100,133.56x = 7,966,049,591.95
  5. Step 5: Solve for x
    x = 7,966,049,591.95/100,133.56
  6. Step 6: Final answer
    x = 79,554.24

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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.