Home / 142,907.76-197,211.60-79,245.72

Finding the Fourth Proportional to 142,907.76, 197,211.60 and 79,245.72

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Solution

The fourth proportional to 142,907.76, 197,211.60 and 79,245.72 is: 109,358.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,907.76 : 197,211.60 = 79,245.72 : x
  2. Step 2: Convert to fraction form
    142,907.76/197,211.60 = 79,245.72/x
  3. Step 3: Cross multiply
    142,907.76x = 197,211.60 × 79,245.72
  4. Step 4: Simplify right side
    142,907.76x = 15,628,175,234.35
  5. Step 5: Solve for x
    x = 15,628,175,234.35/142,907.76
  6. Step 6: Final answer
    x = 109,358.48

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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.