Home / 101,018.22-139,406.12-55,697.85

Finding the Fourth Proportional to 101,018.22, 139,406.12 and 55,697.85

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Solution

The fourth proportional to 101,018.22, 139,406.12 and 55,697.85 is: 76,863.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,018.22 : 139,406.12 = 55,697.85 : x
  2. Step 2: Convert to fraction form
    101,018.22/139,406.12 = 55,697.85/x
  3. Step 3: Cross multiply
    101,018.22x = 139,406.12 × 55,697.85
  4. Step 4: Simplify right side
    101,018.22x = 7,764,620,882.35
  5. Step 5: Solve for x
    x = 7,764,620,882.35/101,018.22
  6. Step 6: Final answer
    x = 76,863.57

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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.