Home / 142,336,815.82-196,442,997.11-79,616,399.29

Finding the Fourth Proportional to 142,336,815.82, 196,442,997.11 and 79,616,399.29

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Solution

The fourth proportional to 142,336,815.82, 196,442,997.11 and 79,616,399.29 is: 109,880,806.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,336,815.82 : 196,442,997.11 = 79,616,399.29 : x
  2. Step 2: Convert to fraction form
    142,336,815.82/196,442,997.11 = 79,616,399.29/x
  3. Step 3: Cross multiply
    142,336,815.82x = 196,442,997.11 × 79,616,399.29
  4. Step 4: Simplify right side
    142,336,815.82x = 15,640,084,095,634,078
  5. Step 5: Solve for x
    x = 15,640,084,095,634,078/142,336,815.82
  6. Step 6: Final answer
    x = 109,880,806.35

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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.