Home / 120,004.45-165,316.58-102,721.68

Finding the Fourth Proportional to 120,004.45, 165,316.58 and 102,721.68

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Solution

The fourth proportional to 120,004.45, 165,316.58 and 102,721.68 is: 141,508.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,004.45 : 165,316.58 = 102,721.68 : x
  2. Step 2: Convert to fraction form
    120,004.45/165,316.58 = 102,721.68/x
  3. Step 3: Cross multiply
    120,004.45x = 165,316.58 × 102,721.68
  4. Step 4: Simplify right side
    120,004.45x = 16,981,597,366.89
  5. Step 5: Solve for x
    x = 16,981,597,366.89/120,004.45
  6. Step 6: Final answer
    x = 141,508.07

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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.