Home / 129,901,381.57-179,263,891.70-77,690,408.86

Finding the Fourth Proportional to 129,901,381.57, 179,263,891.70 and 77,690,408.86

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Solution

The fourth proportional to 129,901,381.57, 179,263,891.70 and 77,690,408.86 is: 107,212,755.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,901,381.57 : 179,263,891.70 = 77,690,408.86 : x
  2. Step 2: Convert to fraction form
    129,901,381.57/179,263,891.70 = 77,690,408.86/x
  3. Step 3: Cross multiply
    129,901,381.57x = 179,263,891.70 × 77,690,408.86
  4. Step 4: Simplify right side
    129,901,381.57x = 13,927,085,040,007,760
  5. Step 5: Solve for x
    x = 13,927,085,040,007,760/129,901,381.57
  6. Step 6: Final answer
    x = 107,212,755.34

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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.