Home / 100,961.44-139,321.80-58,533.76

Finding the Fourth Proportional to 100,961.44, 139,321.80 and 58,533.76

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Solution

The fourth proportional to 100,961.44, 139,321.80 and 58,533.76 is: 80,773.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,961.44 : 139,321.80 = 58,533.76 : x
  2. Step 2: Convert to fraction form
    100,961.44/139,321.80 = 58,533.76/x
  3. Step 3: Cross multiply
    100,961.44x = 139,321.80 × 58,533.76
  4. Step 4: Simplify right side
    100,961.44x = 8,155,028,803.97
  5. Step 5: Solve for x
    x = 8,155,028,803.97/100,961.44
  6. Step 6: Final answer
    x = 80,773.70

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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.