Home / 141,888.78-195,815.34-78,226.50

Finding the Fourth Proportional to 141,888.78, 195,815.34 and 78,226.50

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Solution

The fourth proportional to 141,888.78, 195,815.34 and 78,226.50 is: 107,957.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,888.78 : 195,815.34 = 78,226.50 : x
  2. Step 2: Convert to fraction form
    141,888.78/195,815.34 = 78,226.50/x
  3. Step 3: Cross multiply
    141,888.78x = 195,815.34 × 78,226.50
  4. Step 4: Simplify right side
    141,888.78x = 15,317,948,694.51
  5. Step 5: Solve for x
    x = 15,317,948,694.51/141,888.78
  6. Step 6: Final answer
    x = 107,957.43

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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.