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Finding the Fourth Proportional to 121,068.25, 181,481.87 and 57,814.43

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Solution

The fourth proportional to 121,068.25, 181,481.87 and 57,814.43 is: 86,664.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,068.25 : 181,481.87 = 57,814.43 : x
  2. Step 2: Convert to fraction form
    121,068.25/181,481.87 = 57,814.43/x
  3. Step 3: Cross multiply
    121,068.25x = 181,481.87 × 57,814.43
  4. Step 4: Simplify right side
    121,068.25x = 10,492,270,106.51
  5. Step 5: Solve for x
    x = 10,492,270,106.51/121,068.25
  6. Step 6: Final answer
    x = 86,664.10

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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.