Home / 103,631.60-155,524.20-68,559.60

Finding the Fourth Proportional to 103,631.60, 155,524.20 and 68,559.60

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Solution

The fourth proportional to 103,631.60, 155,524.20 and 68,559.60 is: 102,890.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,631.60 : 155,524.20 = 68,559.60 : x
  2. Step 2: Convert to fraction form
    103,631.60/155,524.20 = 68,559.60/x
  3. Step 3: Cross multiply
    103,631.60x = 155,524.20 × 68,559.60
  4. Step 4: Simplify right side
    103,631.60x = 10,662,676,942.32
  5. Step 5: Solve for x
    x = 10,662,676,942.32/103,631.60
  6. Step 6: Final answer
    x = 102,890.21

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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.