Home / 142,489,416.98-196,618,806.60-79,768,949.42

Finding the Fourth Proportional to 142,489,416.98, 196,618,806.60 and 79,768,949.42

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Solution

The fourth proportional to 142,489,416.98, 196,618,806.60 and 79,768,949.42 is: 110,071,863.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,489,416.98 : 196,618,806.60 = 79,768,949.42 : x
  2. Step 2: Convert to fraction form
    142,489,416.98/196,618,806.60 = 79,768,949.42/x
  3. Step 3: Cross multiply
    142,489,416.98x = 196,618,806.60 × 79,768,949.42
  4. Step 4: Simplify right side
    142,489,416.98x = 15,684,075,638,696,162
  5. Step 5: Solve for x
    x = 15,684,075,638,696,162/142,489,416.98
  6. Step 6: Final answer
    x = 110,071,863.38

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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.