Home / 121,784.88-182,382.09-84,239.58

Finding the Fourth Proportional to 121,784.88, 182,382.09 and 84,239.58

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Solution

The fourth proportional to 121,784.88, 182,382.09 and 84,239.58 is: 126,155.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,784.88 : 182,382.09 = 84,239.58 : x
  2. Step 2: Convert to fraction form
    121,784.88/182,382.09 = 84,239.58/x
  3. Step 3: Cross multiply
    121,784.88x = 182,382.09 × 84,239.58
  4. Step 4: Simplify right side
    121,784.88x = 15,363,790,661.12
  5. Step 5: Solve for x
    x = 15,363,790,661.12/121,784.88
  6. Step 6: Final answer
    x = 126,155.16

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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.