Home / 117,664.13-162,373.68-65,977.78

Finding the Fourth Proportional to 117,664.13, 162,373.68 and 65,977.78

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Solution

The fourth proportional to 117,664.13, 162,373.68 and 65,977.78 is: 91,047.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,664.13 : 162,373.68 = 65,977.78 : x
  2. Step 2: Convert to fraction form
    117,664.13/162,373.68 = 65,977.78/x
  3. Step 3: Cross multiply
    117,664.13x = 162,373.68 × 65,977.78
  4. Step 4: Simplify right side
    117,664.13x = 10,713,054,936.83
  5. Step 5: Solve for x
    x = 10,713,054,936.83/117,664.13
  6. Step 6: Final answer
    x = 91,047.76

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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.