Home / 115,236-159,025.68-64,936.80

Finding the Fourth Proportional to 115,236, 159,025.68 and 64,936.80

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Solution

The fourth proportional to 115,236, 159,025.68 and 64,936.80 is: 89,612.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,236 : 159,025.68 = 64,936.80 : x
  2. Step 2: Convert to fraction form
    115,236/159,025.68 = 64,936.80/x
  3. Step 3: Cross multiply
    115,236x = 159,025.68 × 64,936.80
  4. Step 4: Simplify right side
    115,236x = 10,326,618,777.02
  5. Step 5: Solve for x
    x = 10,326,618,777.02/115,236
  6. Step 6: Final answer
    x = 89,612.78

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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.