Home / 117,132.78-175,515.20-90,543.93

Finding the Fourth Proportional to 117,132.78, 175,515.20 and 90,543.93

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Solution

The fourth proportional to 117,132.78, 175,515.20 and 90,543.93 is: 135,673.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,132.78 : 175,515.20 = 90,543.93 : x
  2. Step 2: Convert to fraction form
    117,132.78/175,515.20 = 90,543.93/x
  3. Step 3: Cross multiply
    117,132.78x = 175,515.20 × 90,543.93
  4. Step 4: Simplify right side
    117,132.78x = 15,891,835,720.68
  5. Step 5: Solve for x
    x = 15,891,835,720.68/117,132.78
  6. Step 6: Final answer
    x = 135,673.68

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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.