Home / 141,783.36-195,664.60-78,121.12

Finding the Fourth Proportional to 141,783.36, 195,664.60 and 78,121.12

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Solution

The fourth proportional to 141,783.36, 195,664.60 and 78,121.12 is: 107,809.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,783.36 : 195,664.60 = 78,121.12 : x
  2. Step 2: Convert to fraction form
    141,783.36/195,664.60 = 78,121.12/x
  3. Step 3: Cross multiply
    141,783.36x = 195,664.60 × 78,121.12
  4. Step 4: Simplify right side
    141,783.36x = 15,285,537,696.35
  5. Step 5: Solve for x
    x = 15,285,537,696.35/141,783.36
  6. Step 6: Final answer
    x = 107,809.11

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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.