Home / 100,982.34-139,356.60-55,662.06

Finding the Fourth Proportional to 100,982.34, 139,356.60 and 55,662.06

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Solution

The fourth proportional to 100,982.34, 139,356.60 and 55,662.06 is: 76,814.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,982.34 : 139,356.60 = 55,662.06 : x
  2. Step 2: Convert to fraction form
    100,982.34/139,356.60 = 55,662.06/x
  3. Step 3: Cross multiply
    100,982.34x = 139,356.60 × 55,662.06
  4. Step 4: Simplify right side
    100,982.34x = 7,756,875,430.60
  5. Step 5: Solve for x
    x = 7,756,875,430.60/100,982.34
  6. Step 6: Final answer
    x = 76,814.18

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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.