Home / 151,699.28-209,343.60-83,716.88

Finding the Fourth Proportional to 151,699.28, 209,343.60 and 83,716.88

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Solution

The fourth proportional to 151,699.28, 209,343.60 and 83,716.88 is: 115,528.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,699.28 : 209,343.60 = 83,716.88 : x
  2. Step 2: Convert to fraction form
    151,699.28/209,343.60 = 83,716.88/x
  3. Step 3: Cross multiply
    151,699.28x = 209,343.60 × 83,716.88
  4. Step 4: Simplify right side
    151,699.28x = 17,525,593,039.97
  5. Step 5: Solve for x
    x = 17,525,593,039.97/151,699.28
  6. Step 6: Final answer
    x = 115,528.52

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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.