Home / 129,901,431.63-179,263,960.75-77,690,458.92

Finding the Fourth Proportional to 129,901,431.63, 179,263,960.75 and 77,690,458.92

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Solution

The fourth proportional to 129,901,431.63, 179,263,960.75 and 77,690,458.92 is: 107,212,824.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,901,431.63 : 179,263,960.75 = 77,690,458.92 : x
  2. Step 2: Convert to fraction form
    129,901,431.63/179,263,960.75 = 77,690,458.92/x
  3. Step 3: Cross multiply
    129,901,431.63x = 179,263,960.75 × 77,690,458.92
  4. Step 4: Simplify right side
    129,901,431.63x = 13,927,099,378,484,368
  5. Step 5: Solve for x
    x = 13,927,099,378,484,368/129,901,431.63
  6. Step 6: Final answer
    x = 107,212,824.40

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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.