Home / 140,815.78-194,318.32-80,384.02

Finding the Fourth Proportional to 140,815.78, 194,318.32 and 80,384.02

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Solution

The fourth proportional to 140,815.78, 194,318.32 and 80,384.02 is: 110,925.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,815.78 : 194,318.32 = 80,384.02 : x
  2. Step 2: Convert to fraction form
    140,815.78/194,318.32 = 80,384.02/x
  3. Step 3: Cross multiply
    140,815.78x = 194,318.32 × 80,384.02
  4. Step 4: Simplify right side
    140,815.78x = 15,620,087,721.25
  5. Step 5: Solve for x
    x = 15,620,087,721.25/140,815.78
  6. Step 6: Final answer
    x = 110,925.69

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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.