Home / 102,540.18-153,794.91-85,121.94

Finding the Fourth Proportional to 102,540.18, 153,794.91 and 85,121.94

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Solution

The fourth proportional to 102,540.18, 153,794.91 and 85,121.94 is: 127,670.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,540.18 : 153,794.91 = 85,121.94 : x
  2. Step 2: Convert to fraction form
    102,540.18/153,794.91 = 85,121.94/x
  3. Step 3: Cross multiply
    102,540.18x = 153,794.91 × 85,121.94
  4. Step 4: Simplify right side
    102,540.18x = 13,091,321,101.33
  5. Step 5: Solve for x
    x = 13,091,321,101.33/102,540.18
  6. Step 6: Final answer
    x = 127,670.16

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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.