Home / 129,901,391.82-179,263,905.84-77,690,419.11

Finding the Fourth Proportional to 129,901,391.82, 179,263,905.84 and 77,690,419.11

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Solution

The fourth proportional to 129,901,391.82, 179,263,905.84 and 77,690,419.11 is: 107,212,769.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,901,391.82 : 179,263,905.84 = 77,690,419.11 : x
  2. Step 2: Convert to fraction form
    129,901,391.82/179,263,905.84 = 77,690,419.11/x
  3. Step 3: Cross multiply
    129,901,391.82x = 179,263,905.84 × 77,690,419.11
  4. Step 4: Simplify right side
    129,901,391.82x = 13,927,087,976,005,176
  5. Step 5: Solve for x
    x = 13,927,087,976,005,176/129,901,391.82
  6. Step 6: Final answer
    x = 107,212,769.48

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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.