Home / 90,743.22-125,217.09-84,055.86

Finding the Fourth Proportional to 90,743.22, 125,217.09 and 84,055.86

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Solution

The fourth proportional to 90,743.22, 125,217.09 and 84,055.86 is: 115,989.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,743.22 : 125,217.09 = 84,055.86 : x
  2. Step 2: Convert to fraction form
    90,743.22/125,217.09 = 84,055.86/x
  3. Step 3: Cross multiply
    90,743.22x = 125,217.09 × 84,055.86
  4. Step 4: Simplify right side
    90,743.22x = 10,525,230,186.65
  5. Step 5: Solve for x
    x = 10,525,230,186.65/90,743.22
  6. Step 6: Final answer
    x = 115,989.16

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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.