Home / 100,928.70-139,297.98-58,511.76

Finding the Fourth Proportional to 100,928.70, 139,297.98 and 58,511.76

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Solution

The fourth proportional to 100,928.70, 139,297.98 and 58,511.76 is: 80,755.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,928.70 : 139,297.98 = 58,511.76 : x
  2. Step 2: Convert to fraction form
    100,928.70/139,297.98 = 58,511.76/x
  3. Step 3: Cross multiply
    100,928.70x = 139,297.98 × 58,511.76
  4. Step 4: Simplify right side
    100,928.70x = 8,150,569,974.24
  5. Step 5: Solve for x
    x = 8,150,569,974.24/100,928.70
  6. Step 6: Final answer
    x = 80,755.72

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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.