Home / 145,198,036.90-217,940,545.26-77,040,728.64

Finding the Fourth Proportional to 145,198,036.90, 217,940,545.26 and 77,040,728.64

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Solution

The fourth proportional to 145,198,036.90, 217,940,545.26 and 77,040,728.64 is: 115,637,227.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,198,036.90 : 217,940,545.26 = 77,040,728.64 : x
  2. Step 2: Convert to fraction form
    145,198,036.90/217,940,545.26 = 77,040,728.64/x
  3. Step 3: Cross multiply
    145,198,036.90x = 217,940,545.26 × 77,040,728.64
  4. Step 4: Simplify right side
    145,198,036.90x = 16,790,298,407,029,298
  5. Step 5: Solve for x
    x = 16,790,298,407,029,298/145,198,036.90
  6. Step 6: Final answer
    x = 115,637,227.37

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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.