Home / 259,745,505.14-389,608,807.47-77,987,960.18

Finding the Fourth Proportional to 259,745,505.14, 389,608,807.47 and 77,987,960.18

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Solution

The fourth proportional to 259,745,505.14, 389,608,807.47 and 77,987,960.18 is: 116,979,102.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,745,505.14 : 389,608,807.47 = 77,987,960.18 : x
  2. Step 2: Convert to fraction form
    259,745,505.14/389,608,807.47 = 77,987,960.18/x
  3. Step 3: Cross multiply
    259,745,505.14x = 389,608,807.47 × 77,987,960.18
  4. Step 4: Simplify right side
    259,745,505.14x = 30,384,796,162,747,652
  5. Step 5: Solve for x
    x = 30,384,796,162,747,652/259,745,505.14
  6. Step 6: Final answer
    x = 116,979,102.86

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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.