Home / 142,470,860.20-213,538,328.70-74,278,450.60

Finding the Fourth Proportional to 142,470,860.20, 213,538,328.70 and 74,278,450.60

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Solution

The fourth proportional to 142,470,860.20, 213,538,328.70 and 74,278,450.60 is: 111,330,107.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,470,860.20 : 213,538,328.70 = 74,278,450.60 : x
  2. Step 2: Convert to fraction form
    142,470,860.20/213,538,328.70 = 74,278,450.60/x
  3. Step 3: Cross multiply
    142,470,860.20x = 213,538,328.70 × 74,278,450.60
  4. Step 4: Simplify right side
    142,470,860.20x = 15,861,296,199,549,510
  5. Step 5: Solve for x
    x = 15,861,296,199,549,510/142,470,860.20
  6. Step 6: Final answer
    x = 111,330,107.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.