Home / 141,828.80-195,722.72-78,166.64

Finding the Fourth Proportional to 141,828.80, 195,722.72 and 78,166.64

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Solution

The fourth proportional to 141,828.80, 195,722.72 and 78,166.64 is: 107,869.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,828.80 : 195,722.72 = 78,166.64 : x
  2. Step 2: Convert to fraction form
    141,828.80/195,722.72 = 78,166.64/x
  3. Step 3: Cross multiply
    141,828.80x = 195,722.72 × 78,166.64
  4. Step 4: Simplify right side
    141,828.80x = 15,298,987,394.06
  5. Step 5: Solve for x
    x = 15,298,987,394.06/141,828.80
  6. Step 6: Final answer
    x = 107,869.40

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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.