Home / 141,894.09-195,815.21-78,234.21

Finding the Fourth Proportional to 141,894.09, 195,815.21 and 78,234.21

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Solution

The fourth proportional to 141,894.09, 195,815.21 and 78,234.21 is: 107,963.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,894.09 : 195,815.21 = 78,234.21 : x
  2. Step 2: Convert to fraction form
    141,894.09/195,815.21 = 78,234.21/x
  3. Step 3: Cross multiply
    141,894.09x = 195,815.21 × 78,234.21
  4. Step 4: Simplify right side
    141,894.09x = 15,319,447,869.16
  5. Step 5: Solve for x
    x = 15,319,447,869.16/141,894.09
  6. Step 6: Final answer
    x = 107,963.96

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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.