Home / 141,787.29-195,675.20-78,125.07

Finding the Fourth Proportional to 141,787.29, 195,675.20 and 78,125.07

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Solution

The fourth proportional to 141,787.29, 195,675.20 and 78,125.07 is: 107,817.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,787.29 : 195,675.20 = 78,125.07 : x
  2. Step 2: Convert to fraction form
    141,787.29/195,675.20 = 78,125.07/x
  3. Step 3: Cross multiply
    141,787.29x = 195,675.20 × 78,125.07
  4. Step 4: Simplify right side
    141,787.29x = 15,287,138,306.64
  5. Step 5: Solve for x
    x = 15,287,138,306.64/141,787.29
  6. Step 6: Final answer
    x = 107,817.41

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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.