Home / 122,008,179.78-168,309,030.75-77,908,811.94

Finding the Fourth Proportional to 122,008,179.78, 168,309,030.75 and 77,908,811.94

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Solution

The fourth proportional to 122,008,179.78, 168,309,030.75 and 77,908,811.94 is: 107,474,405.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,008,179.78 : 168,309,030.75 = 77,908,811.94 : x
  2. Step 2: Convert to fraction form
    122,008,179.78/168,309,030.75 = 77,908,811.94/x
  3. Step 3: Cross multiply
    122,008,179.78x = 168,309,030.75 × 77,908,811.94
  4. Step 4: Simplify right side
    122,008,179.78x = 13,112,756,624,505,426
  5. Step 5: Solve for x
    x = 13,112,756,624,505,426/122,008,179.78
  6. Step 6: Final answer
    x = 107,474,405.80

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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.