Home / 121,263.89-181,973.66-81,327.96

Finding the Fourth Proportional to 121,263.89, 181,973.66 and 81,327.96

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Solution

The fourth proportional to 121,263.89, 181,973.66 and 81,327.96 is: 122,044.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,263.89 : 181,973.66 = 81,327.96 : x
  2. Step 2: Convert to fraction form
    121,263.89/181,973.66 = 81,327.96/x
  3. Step 3: Cross multiply
    121,263.89x = 181,973.66 × 81,327.96
  4. Step 4: Simplify right side
    121,263.89x = 14,799,546,134.89
  5. Step 5: Solve for x
    x = 14,799,546,134.89/121,263.89
  6. Step 6: Final answer
    x = 122,044.14

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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.