Home / 100,996.92-139,369.40-55,675.28

Finding the Fourth Proportional to 100,996.92, 139,369.40 and 55,675.28

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Solution

The fourth proportional to 100,996.92, 139,369.40 and 55,675.28 is: 76,828.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,996.92 : 139,369.40 = 55,675.28 : x
  2. Step 2: Convert to fraction form
    100,996.92/139,369.40 = 55,675.28/x
  3. Step 3: Cross multiply
    100,996.92x = 139,369.40 × 55,675.28
  4. Step 4: Simplify right side
    100,996.92x = 7,759,430,368.43
  5. Step 5: Solve for x
    x = 7,759,430,368.43/100,996.92
  6. Step 6: Final answer
    x = 76,828.39

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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.