Home / 115,901.20-159,786.61-99,086.07

Finding the Fourth Proportional to 115,901.20, 159,786.61 and 99,086.07

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Solution

The fourth proportional to 115,901.20, 159,786.61 and 99,086.07 is: 136,604.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,901.20 : 159,786.61 = 99,086.07 : x
  2. Step 2: Convert to fraction form
    115,901.20/159,786.61 = 99,086.07/x
  3. Step 3: Cross multiply
    115,901.20x = 159,786.61 × 99,086.07
  4. Step 4: Simplify right side
    115,901.20x = 15,832,626,676.21
  5. Step 5: Solve for x
    x = 15,832,626,676.21/115,901.20
  6. Step 6: Final answer
    x = 136,604.52

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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.