Home / 142,630,876-196,835,474.64-79,909,618.78

Finding the Fourth Proportional to 142,630,876, 196,835,474.64 and 79,909,618.78

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Solution

The fourth proportional to 142,630,876, 196,835,474.64 and 79,909,618.78 is: 110,277,999.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,630,876 : 196,835,474.64 = 79,909,618.78 : x
  2. Step 2: Convert to fraction form
    142,630,876/196,835,474.64 = 79,909,618.78/x
  3. Step 3: Cross multiply
    142,630,876x = 196,835,474.64 × 79,909,618.78
  4. Step 4: Simplify right side
    142,630,876x = 15,729,047,740,862,756
  5. Step 5: Solve for x
    x = 15,729,047,740,862,756/142,630,876
  6. Step 6: Final answer
    x = 110,277,999.98

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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.