Home / 117,310.75-161,709.69-71,904.58

Finding the Fourth Proportional to 117,310.75, 161,709.69 and 71,904.58

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Solution

The fourth proportional to 117,310.75, 161,709.69 and 71,904.58 is: 99,118.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,310.75 : 161,709.69 = 71,904.58 : x
  2. Step 2: Convert to fraction form
    117,310.75/161,709.69 = 71,904.58/x
  3. Step 3: Cross multiply
    117,310.75x = 161,709.69 × 71,904.58
  4. Step 4: Simplify right side
    117,310.75x = 11,627,667,341.38
  5. Step 5: Solve for x
    x = 11,627,667,341.38/117,310.75
  6. Step 6: Final answer
    x = 99,118.52

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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.