Home / 198,774,014.40-298,161,021.60-77,605,466.40

Finding the Fourth Proportional to 198,774,014.40, 298,161,021.60 and 77,605,466.40

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Solution

The fourth proportional to 198,774,014.40, 298,161,021.60 and 77,605,466.40 is: 116,408,199.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,774,014.40 : 298,161,021.60 = 77,605,466.40 : x
  2. Step 2: Convert to fraction form
    198,774,014.40/298,161,021.60 = 77,605,466.40/x
  3. Step 3: Cross multiply
    198,774,014.40x = 298,161,021.60 × 77,605,466.40
  4. Step 4: Simplify right side
    198,774,014.40x = 23,138,925,143,568,476
  5. Step 5: Solve for x
    x = 23,138,925,143,568,476/198,774,014.40
  6. Step 6: Final answer
    x = 116,408,199.60

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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.