Home / 102,815.56-154,223.32-57,839.90

Finding the Fourth Proportional to 102,815.56, 154,223.32 and 57,839.90

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Solution

The fourth proportional to 102,815.56, 154,223.32 and 57,839.90 is: 86,759.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,815.56 : 154,223.32 = 57,839.90 : x
  2. Step 2: Convert to fraction form
    102,815.56/154,223.32 = 57,839.90/x
  3. Step 3: Cross multiply
    102,815.56x = 154,223.32 × 57,839.90
  4. Step 4: Simplify right side
    102,815.56x = 8,920,261,406.47
  5. Step 5: Solve for x
    x = 8,920,261,406.47/102,815.56
  6. Step 6: Final answer
    x = 86,759.84

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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.