Home / 102,840.33-141,919.98-57,519.09

Finding the Fourth Proportional to 102,840.33, 141,919.98 and 57,519.09

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Solution

The fourth proportional to 102,840.33, 141,919.98 and 57,519.09 is: 79,376.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,840.33 : 141,919.98 = 57,519.09 : x
  2. Step 2: Convert to fraction form
    102,840.33/141,919.98 = 57,519.09/x
  3. Step 3: Cross multiply
    102,840.33x = 141,919.98 × 57,519.09
  4. Step 4: Simplify right side
    102,840.33x = 8,163,108,102.42
  5. Step 5: Solve for x
    x = 8,163,108,102.42/102,840.33
  6. Step 6: Final answer
    x = 79,376.53

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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.