Home / 100,979.44-139,350.83-55,038.96

Finding the Fourth Proportional to 100,979.44, 139,350.83 and 55,038.96

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Solution

The fourth proportional to 100,979.44, 139,350.83 and 55,038.96 is: 75,953.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,979.44 : 139,350.83 = 55,038.96 : x
  2. Step 2: Convert to fraction form
    100,979.44/139,350.83 = 55,038.96/x
  3. Step 3: Cross multiply
    100,979.44x = 139,350.83 × 55,038.96
  4. Step 4: Simplify right side
    100,979.44x = 7,669,724,483.14
  5. Step 5: Solve for x
    x = 7,669,724,483.14/100,979.44
  6. Step 6: Final answer
    x = 75,953.33

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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.