Home / 102,138.25-153,176.23-82,100.21

Finding the Fourth Proportional to 102,138.25, 153,176.23 and 82,100.21

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Solution

The fourth proportional to 102,138.25, 153,176.23 and 82,100.21 is: 123,125.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,138.25 : 153,176.23 = 82,100.21 : x
  2. Step 2: Convert to fraction form
    102,138.25/153,176.23 = 82,100.21/x
  3. Step 3: Cross multiply
    102,138.25x = 153,176.23 × 82,100.21
  4. Step 4: Simplify right side
    102,138.25x = 12,575,800,071.20
  5. Step 5: Solve for x
    x = 12,575,800,071.20/102,138.25
  6. Step 6: Final answer
    x = 123,125.27

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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.