Home / 198,774,015.40-298,161,023.10-77,605,467.40

Finding the Fourth Proportional to 198,774,015.40, 298,161,023.10 and 77,605,467.40

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Solution

The fourth proportional to 198,774,015.40, 298,161,023.10 and 77,605,467.40 is: 116,408,201.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,774,015.40 : 298,161,023.10 = 77,605,467.40 : x
  2. Step 2: Convert to fraction form
    198,774,015.40/298,161,023.10 = 77,605,467.40/x
  3. Step 3: Cross multiply
    198,774,015.40x = 298,161,023.10 × 77,605,467.40
  4. Step 4: Simplify right side
    198,774,015.40x = 23,138,925,558,137,700
  5. Step 5: Solve for x
    x = 23,138,925,558,137,700/198,774,015.40
  6. Step 6: Final answer
    x = 116,408,201.10

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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.