Home / 132,789.90-183,236.94-78,340.92

Finding the Fourth Proportional to 132,789.90, 183,236.94 and 78,340.92

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Solution

The fourth proportional to 132,789.90, 183,236.94 and 78,340.92 is: 108,102.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,789.90 : 183,236.94 = 78,340.92 : x
  2. Step 2: Convert to fraction form
    132,789.90/183,236.94 = 78,340.92/x
  3. Step 3: Cross multiply
    132,789.90x = 183,236.94 × 78,340.92
  4. Step 4: Simplify right side
    132,789.90x = 14,354,950,457.58
  5. Step 5: Solve for x
    x = 14,354,950,457.58/132,789.90
  6. Step 6: Final answer
    x = 108,102.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.