Home / 142,433.24-196,556.63-78,769.67

Finding the Fourth Proportional to 142,433.24, 196,556.63 and 78,769.67

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Solution

The fourth proportional to 142,433.24, 196,556.63 and 78,769.67 is: 108,701.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,433.24 : 196,556.63 = 78,769.67 : x
  2. Step 2: Convert to fraction form
    142,433.24/196,556.63 = 78,769.67/x
  3. Step 3: Cross multiply
    142,433.24x = 196,556.63 × 78,769.67
  4. Step 4: Simplify right side
    142,433.24x = 15,482,699,504.78
  5. Step 5: Solve for x
    x = 15,482,699,504.78/142,433.24
  6. Step 6: Final answer
    x = 108,701.45

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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.