Home / 120,308.09-180,789.27-64,187.84

Finding the Fourth Proportional to 120,308.09, 180,789.27 and 64,187.84

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Solution

The fourth proportional to 120,308.09, 180,789.27 and 64,187.84 is: 96,456.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,308.09 : 180,789.27 = 64,187.84 : x
  2. Step 2: Convert to fraction form
    120,308.09/180,789.27 = 64,187.84/x
  3. Step 3: Cross multiply
    120,308.09x = 180,789.27 × 64,187.84
  4. Step 4: Simplify right side
    120,308.09x = 11,604,472,947.75
  5. Step 5: Solve for x
    x = 11,604,472,947.75/120,308.09
  6. Step 6: Final answer
    x = 96,456.30

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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.