Home / 103,198.86-142,416.03-57,886.90

Finding the Fourth Proportional to 103,198.86, 142,416.03 and 57,886.90

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Solution

The fourth proportional to 103,198.86, 142,416.03 and 57,886.90 is: 79,884.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,198.86 : 142,416.03 = 57,886.90 : x
  2. Step 2: Convert to fraction form
    103,198.86/142,416.03 = 57,886.90/x
  3. Step 3: Cross multiply
    103,198.86x = 142,416.03 × 57,886.90
  4. Step 4: Simplify right side
    103,198.86x = 8,244,022,487.01
  5. Step 5: Solve for x
    x = 8,244,022,487.01/103,198.86
  6. Step 6: Final answer
    x = 79,884.82

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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.