Home / 100,188.30-138,226.29-57,745.92

Finding the Fourth Proportional to 100,188.30, 138,226.29 and 57,745.92

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Solution

The fourth proportional to 100,188.30, 138,226.29 and 57,745.92 is: 79,670.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,188.30 : 138,226.29 = 57,745.92 : x
  2. Step 2: Convert to fraction form
    100,188.30/138,226.29 = 57,745.92/x
  3. Step 3: Cross multiply
    100,188.30x = 138,226.29 × 57,745.92
  4. Step 4: Simplify right side
    100,188.30x = 7,982,004,284.24
  5. Step 5: Solve for x
    x = 7,982,004,284.24/100,188.30
  6. Step 6: Final answer
    x = 79,670.02

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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.