Home / 103,091.58-142,334.94-79,175.52

Finding the Fourth Proportional to 103,091.58, 142,334.94 and 79,175.52

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Solution

The fourth proportional to 103,091.58, 142,334.94 and 79,175.52 is: 109,314.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,091.58 : 142,334.94 = 79,175.52 : x
  2. Step 2: Convert to fraction form
    103,091.58/142,334.94 = 79,175.52/x
  3. Step 3: Cross multiply
    103,091.58x = 142,334.94 × 79,175.52
  4. Step 4: Simplify right side
    103,091.58x = 11,269,442,888.67
  5. Step 5: Solve for x
    x = 11,269,442,888.67/103,091.58
  6. Step 6: Final answer
    x = 109,314.87

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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.