Home / 119,138.83-178,708.31-74,796.72

Finding the Fourth Proportional to 119,138.83, 178,708.31 and 74,796.72

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Solution

The fourth proportional to 119,138.83, 178,708.31 and 74,796.72 is: 112,195.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,138.83 : 178,708.31 = 74,796.72 : x
  2. Step 2: Convert to fraction form
    119,138.83/178,708.31 = 74,796.72/x
  3. Step 3: Cross multiply
    119,138.83x = 178,708.31 × 74,796.72
  4. Step 4: Simplify right side
    119,138.83x = 13,366,796,087.06
  5. Step 5: Solve for x
    x = 13,366,796,087.06/119,138.83
  6. Step 6: Final answer
    x = 112,195.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.