Home / 121,986.81-182,969.42-43,097.13

Finding the Fourth Proportional to 121,986.81, 182,969.42 and 43,097.13

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Solution

The fourth proportional to 121,986.81, 182,969.42 and 43,097.13 is: 64,641.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,986.81 : 182,969.42 = 43,097.13 : x
  2. Step 2: Convert to fraction form
    121,986.81/182,969.42 = 43,097.13/x
  3. Step 3: Cross multiply
    121,986.81x = 182,969.42 × 43,097.13
  4. Step 4: Simplify right side
    121,986.81x = 7,885,456,664.28
  5. Step 5: Solve for x
    x = 7,885,456,664.28/121,986.81
  6. Step 6: Final answer
    x = 64,641.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.