Home / 140,639.52-194,087.18-76,977.30

Finding the Fourth Proportional to 140,639.52, 194,087.18 and 76,977.30

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Solution

The fourth proportional to 140,639.52, 194,087.18 and 76,977.30 is: 106,231.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,639.52 : 194,087.18 = 76,977.30 : x
  2. Step 2: Convert to fraction form
    140,639.52/194,087.18 = 76,977.30/x
  3. Step 3: Cross multiply
    140,639.52x = 194,087.18 × 76,977.30
  4. Step 4: Simplify right side
    140,639.52x = 14,940,307,081.01
  5. Step 5: Solve for x
    x = 14,940,307,081.01/140,639.52
  6. Step 6: Final answer
    x = 106,231.21

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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.