Home / 143,988,447.89-198,703,929.68-81,277,745.69

Finding the Fourth Proportional to 143,988,447.89, 198,703,929.68 and 81,277,745.69

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Solution

The fourth proportional to 143,988,447.89, 198,703,929.68 and 81,277,745.69 is: 112,163,216.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,988,447.89 : 198,703,929.68 = 81,277,745.69 : x
  2. Step 2: Convert to fraction form
    143,988,447.89/198,703,929.68 = 81,277,745.69/x
  3. Step 3: Cross multiply
    143,988,447.89x = 198,703,929.68 × 81,277,745.69
  4. Step 4: Simplify right side
    143,988,447.89x = 16,150,207,463,344,358
  5. Step 5: Solve for x
    x = 16,150,207,463,344,358/143,988,447.89
  6. Step 6: Final answer
    x = 112,163,216.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.