Home / 128,698,979.40-193,048,469.10-106,024,163.40

Finding the Fourth Proportional to 128,698,979.40, 193,048,469.10 and 106,024,163.40

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Solution

The fourth proportional to 128,698,979.40, 193,048,469.10 and 106,024,163.40 is: 159,036,245.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,698,979.40 : 193,048,469.10 = 106,024,163.40 : x
  2. Step 2: Convert to fraction form
    128,698,979.40/193,048,469.10 = 106,024,163.40/x
  3. Step 3: Cross multiply
    128,698,979.40x = 193,048,469.10 × 106,024,163.40
  4. Step 4: Simplify right side
    128,698,979.40x = 20,467,802,431,978,252
  5. Step 5: Solve for x
    x = 20,467,802,431,978,252/128,698,979.40
  6. Step 6: Final answer
    x = 159,036,245.10

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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.