Home / 121,010.90-181,516.35-81,353.30

Finding the Fourth Proportional to 121,010.90, 181,516.35 and 81,353.30

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Solution

The fourth proportional to 121,010.90, 181,516.35 and 81,353.30 is: 122,029.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,010.90 : 181,516.35 = 81,353.30 : x
  2. Step 2: Convert to fraction form
    121,010.90/181,516.35 = 81,353.30/x
  3. Step 3: Cross multiply
    121,010.90x = 181,516.35 × 81,353.30
  4. Step 4: Simplify right side
    121,010.90x = 14,766,954,076.46
  5. Step 5: Solve for x
    x = 14,766,954,076.46/121,010.90
  6. Step 6: Final answer
    x = 122,029.95

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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.