Home / 103,097.06-142,342.48-79,181

Finding the Fourth Proportional to 103,097.06, 142,342.48 and 79,181

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Solution

The fourth proportional to 103,097.06, 142,342.48 and 79,181 is: 109,322.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,097.06 : 142,342.48 = 79,181 : x
  2. Step 2: Convert to fraction form
    103,097.06/142,342.48 = 79,181/x
  3. Step 3: Cross multiply
    103,097.06x = 142,342.48 × 79,181
  4. Step 4: Simplify right side
    103,097.06x = 11,270,819,908.88
  5. Step 5: Solve for x
    x = 11,270,819,908.88/103,097.06
  6. Step 6: Final answer
    x = 109,322.42

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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.