Home / 260,787.60-391,181.40-102,934.80

Finding the Fourth Proportional to 260,787.60, 391,181.40 and 102,934.80

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Solution

The fourth proportional to 260,787.60, 391,181.40 and 102,934.80 is: 154,402.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,787.60 : 391,181.40 = 102,934.80 : x
  2. Step 2: Convert to fraction form
    260,787.60/391,181.40 = 102,934.80/x
  3. Step 3: Cross multiply
    260,787.60x = 391,181.40 × 102,934.80
  4. Step 4: Simplify right side
    260,787.60x = 40,266,179,172.72
  5. Step 5: Solve for x
    x = 40,266,179,172.72/260,787.60
  6. Step 6: Final answer
    x = 154,402.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.