Home / 100,936.04-139,286.13-55,605.11

Finding the Fourth Proportional to 100,936.04, 139,286.13 and 55,605.11

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Solution

The fourth proportional to 100,936.04, 139,286.13 and 55,605.11 is: 76,731.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,936.04 : 139,286.13 = 55,605.11 : x
  2. Step 2: Convert to fraction form
    100,936.04/139,286.13 = 55,605.11/x
  3. Step 3: Cross multiply
    100,936.04x = 139,286.13 × 55,605.11
  4. Step 4: Simplify right side
    100,936.04x = 7,745,020,580.12
  5. Step 5: Solve for x
    x = 7,745,020,580.12/100,936.04
  6. Step 6: Final answer
    x = 76,731.96

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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.