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Finding the Fourth Proportional to 121,086.61, 181,636.73 and 36,849.51

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Solution

The fourth proportional to 121,086.61, 181,636.73 and 36,849.51 is: 55,276.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,086.61 : 181,636.73 = 36,849.51 : x
  2. Step 2: Convert to fraction form
    121,086.61/181,636.73 = 36,849.51/x
  3. Step 3: Cross multiply
    121,086.61x = 181,636.73 × 36,849.51
  4. Step 4: Simplify right side
    121,086.61x = 6,693,224,498.50
  5. Step 5: Solve for x
    x = 6,693,224,498.50/121,086.61
  6. Step 6: Final answer
    x = 55,276.34

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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.