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Finding the Fourth Proportional to 101,283.12, 139,769.87 and 55,960.97

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Solution

The fourth proportional to 101,283.12, 139,769.87 and 55,960.97 is: 77,225.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,283.12 : 139,769.87 = 55,960.97 : x
  2. Step 2: Convert to fraction form
    101,283.12/139,769.87 = 55,960.97/x
  3. Step 3: Cross multiply
    101,283.12x = 139,769.87 × 55,960.97
  4. Step 4: Simplify right side
    101,283.12x = 7,821,656,523.32
  5. Step 5: Solve for x
    x = 7,821,656,523.32/101,283.12
  6. Step 6: Final answer
    x = 77,225.67

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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.