Home / 165,800.20-248,786.70-72,315.40

Finding the Fourth Proportional to 165,800.20, 248,786.70 and 72,315.40

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Solution

The fourth proportional to 165,800.20, 248,786.70 and 72,315.40 is: 108,510.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,800.20 : 248,786.70 = 72,315.40 : x
  2. Step 2: Convert to fraction form
    165,800.20/248,786.70 = 72,315.40/x
  3. Step 3: Cross multiply
    165,800.20x = 248,786.70 × 72,315.40
  4. Step 4: Simplify right side
    165,800.20x = 17,991,109,725.18
  5. Step 5: Solve for x
    x = 17,991,109,725.18/165,800.20
  6. Step 6: Final answer
    x = 108,510.78

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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.