Home / 120,812.71-166,716.14-72,441.33

Finding the Fourth Proportional to 120,812.71, 166,716.14 and 72,441.33

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Solution

The fourth proportional to 120,812.71, 166,716.14 and 72,441.33 is: 99,965.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,812.71 : 166,716.14 = 72,441.33 : x
  2. Step 2: Convert to fraction form
    120,812.71/166,716.14 = 72,441.33/x
  3. Step 3: Cross multiply
    120,812.71x = 166,716.14 × 72,441.33
  4. Step 4: Simplify right side
    120,812.71x = 12,077,138,914.07
  5. Step 5: Solve for x
    x = 12,077,138,914.07/120,812.71
  6. Step 6: Final answer
    x = 99,965.80

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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.