Home / 142,237,087.20-213,355,630.80-139,969,605.60

Finding the Fourth Proportional to 142,237,087.20, 213,355,630.80 and 139,969,605.60

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Solution

The fourth proportional to 142,237,087.20, 213,355,630.80 and 139,969,605.60 is: 209,954,408.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,237,087.20 : 213,355,630.80 = 139,969,605.60 : x
  2. Step 2: Convert to fraction form
    142,237,087.20/213,355,630.80 = 139,969,605.60/x
  3. Step 3: Cross multiply
    142,237,087.20x = 213,355,630.80 × 139,969,605.60
  4. Step 4: Simplify right side
    142,237,087.20x = 29,863,303,495,615,212
  5. Step 5: Solve for x
    x = 29,863,303,495,615,212/142,237,087.20
  6. Step 6: Final answer
    x = 209,954,408.40

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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.