Home / 117,315.75-161,716.59-71,909.58

Finding the Fourth Proportional to 117,315.75, 161,716.59 and 71,909.58

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Solution

The fourth proportional to 117,315.75, 161,716.59 and 71,909.58 is: 99,125.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,315.75 : 161,716.59 = 71,909.58 : x
  2. Step 2: Convert to fraction form
    117,315.75/161,716.59 = 71,909.58/x
  3. Step 3: Cross multiply
    117,315.75x = 161,716.59 × 71,909.58
  4. Step 4: Simplify right side
    117,315.75x = 11,628,972,065.93
  5. Step 5: Solve for x
    x = 11,628,972,065.93/117,315.75
  6. Step 6: Final answer
    x = 99,125.41

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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.