Home / 103,099.96-142,564.26-81,842.36

Finding the Fourth Proportional to 103,099.96, 142,564.26 and 81,842.36

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Solution

The fourth proportional to 103,099.96, 142,564.26 and 81,842.36 is: 113,169.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,099.96 : 142,564.26 = 81,842.36 : x
  2. Step 2: Convert to fraction form
    103,099.96/142,564.26 = 81,842.36/x
  3. Step 3: Cross multiply
    103,099.96x = 142,564.26 × 81,842.36
  4. Step 4: Simplify right side
    103,099.96x = 11,667,795,490.05
  5. Step 5: Solve for x
    x = 11,667,795,490.05/103,099.96
  6. Step 6: Final answer
    x = 113,169.74

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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.