Home / 100,427.30-138,588.46-57,984.92

Finding the Fourth Proportional to 100,427.30, 138,588.46 and 57,984.92

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Solution

The fourth proportional to 100,427.30, 138,588.46 and 57,984.92 is: 80,018.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,427.30 : 138,588.46 = 57,984.92 : x
  2. Step 2: Convert to fraction form
    100,427.30/138,588.46 = 57,984.92/x
  3. Step 3: Cross multiply
    100,427.30x = 138,588.46 × 57,984.92
  4. Step 4: Simplify right side
    100,427.30x = 8,036,040,766.02
  5. Step 5: Solve for x
    x = 8,036,040,766.02/100,427.30
  6. Step 6: Final answer
    x = 80,018.49

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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.