Home / 129,873.15-194,809.73-121,999.95

Finding the Fourth Proportional to 129,873.15, 194,809.73 and 121,999.95

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Solution

The fourth proportional to 129,873.15, 194,809.73 and 121,999.95 is: 182,999.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,873.15 : 194,809.73 = 121,999.95 : x
  2. Step 2: Convert to fraction form
    129,873.15/194,809.73 = 121,999.95/x
  3. Step 3: Cross multiply
    129,873.15x = 194,809.73 × 121,999.95
  4. Step 4: Simplify right side
    129,873.15x = 23,766,776,709.51
  5. Step 5: Solve for x
    x = 23,766,776,709.51/129,873.15
  6. Step 6: Final answer
    x = 182,999.93

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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.