Home / 140,678.61-194,154.97-80,235.40

Finding the Fourth Proportional to 140,678.61, 194,154.97 and 80,235.40

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Solution

The fourth proportional to 140,678.61, 194,154.97 and 80,235.40 is: 110,735.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,678.61 : 194,154.97 = 80,235.40 : x
  2. Step 2: Convert to fraction form
    140,678.61/194,154.97 = 80,235.40/x
  3. Step 3: Cross multiply
    140,678.61x = 194,154.97 × 80,235.40
  4. Step 4: Simplify right side
    140,678.61x = 15,578,101,679.94
  5. Step 5: Solve for x
    x = 15,578,101,679.94/140,678.61
  6. Step 6: Final answer
    x = 110,735.40

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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.