Home / 129,981.78-194,979.54-36,494.82

Finding the Fourth Proportional to 129,981.78, 194,979.54 and 36,494.82

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Solution

The fourth proportional to 129,981.78, 194,979.54 and 36,494.82 is: 54,744.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,981.78 : 194,979.54 = 36,494.82 : x
  2. Step 2: Convert to fraction form
    129,981.78/194,979.54 = 36,494.82/x
  3. Step 3: Cross multiply
    129,981.78x = 194,979.54 × 36,494.82
  4. Step 4: Simplify right side
    129,981.78x = 7,115,743,215.98
  5. Step 5: Solve for x
    x = 7,115,743,215.98/129,981.78
  6. Step 6: Final answer
    x = 54,744.16

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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.