Home / 142,724.34-196,951.12-78,180.67

Finding the Fourth Proportional to 142,724.34, 196,951.12 and 78,180.67

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Solution

The fourth proportional to 142,724.34, 196,951.12 and 78,180.67 is: 107,884.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,724.34 : 196,951.12 = 78,180.67 : x
  2. Step 2: Convert to fraction form
    142,724.34/196,951.12 = 78,180.67/x
  3. Step 3: Cross multiply
    142,724.34x = 196,951.12 × 78,180.67
  4. Step 4: Simplify right side
    142,724.34x = 15,397,770,518.85
  5. Step 5: Solve for x
    x = 15,397,770,518.85/142,724.34
  6. Step 6: Final answer
    x = 107,884.69

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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.