Home / 120,784.36-181,236.75-54,272.02

Finding the Fourth Proportional to 120,784.36, 181,236.75 and 54,272.02

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Solution

The fourth proportional to 120,784.36, 181,236.75 and 54,272.02 is: 81,435.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,784.36 : 181,236.75 = 54,272.02 : x
  2. Step 2: Convert to fraction form
    120,784.36/181,236.75 = 54,272.02/x
  3. Step 3: Cross multiply
    120,784.36x = 181,236.75 × 54,272.02
  4. Step 4: Simplify right side
    120,784.36x = 9,836,084,520.74
  5. Step 5: Solve for x
    x = 9,836,084,520.74/120,784.36
  6. Step 6: Final answer
    x = 81,435.08

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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.