Home / 118,965.12-164,172.09-65,250.57

Finding the Fourth Proportional to 118,965.12, 164,172.09 and 65,250.57

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Solution

The fourth proportional to 118,965.12, 164,172.09 and 65,250.57 is: 90,045.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,965.12 : 164,172.09 = 65,250.57 : x
  2. Step 2: Convert to fraction form
    118,965.12/164,172.09 = 65,250.57/x
  3. Step 3: Cross multiply
    118,965.12x = 164,172.09 × 65,250.57
  4. Step 4: Simplify right side
    118,965.12x = 10,712,322,450.59
  5. Step 5: Solve for x
    x = 10,712,322,450.59/118,965.12
  6. Step 6: Final answer
    x = 90,045.91

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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.