Home / 100,856.54-139,182.96-55,535.56

Finding the Fourth Proportional to 100,856.54, 139,182.96 and 55,535.56

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Solution

The fourth proportional to 100,856.54, 139,182.96 and 55,535.56 is: 76,639.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,856.54 : 139,182.96 = 55,535.56 : x
  2. Step 2: Convert to fraction form
    100,856.54/139,182.96 = 55,535.56/x
  3. Step 3: Cross multiply
    100,856.54x = 139,182.96 × 55,535.56
  4. Step 4: Simplify right side
    100,856.54x = 7,729,603,173.97
  5. Step 5: Solve for x
    x = 7,729,603,173.97/100,856.54
  6. Step 6: Final answer
    x = 76,639.58

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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.