Home / 117,131.25-175,512.91-90,542.40

Finding the Fourth Proportional to 117,131.25, 175,512.91 and 90,542.40

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Solution

The fourth proportional to 117,131.25, 175,512.91 and 90,542.40 is: 135,671.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,131.25 : 175,512.91 = 90,542.40 : x
  2. Step 2: Convert to fraction form
    117,131.25/175,512.91 = 90,542.40/x
  3. Step 3: Cross multiply
    117,131.25x = 175,512.91 × 90,542.40
  4. Step 4: Simplify right side
    117,131.25x = 15,891,358,998.46
  5. Step 5: Solve for x
    x = 15,891,358,998.46/117,131.25
  6. Step 6: Final answer
    x = 135,671.38

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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.