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Finding the Fourth Proportional to 115,489.80, 173,234.70 and 103,048.20

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Solution

The fourth proportional to 115,489.80, 173,234.70 and 103,048.20 is: 154,572.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,489.80 : 173,234.70 = 103,048.20 : x
  2. Step 2: Convert to fraction form
    115,489.80/173,234.70 = 103,048.20/x
  3. Step 3: Cross multiply
    115,489.80x = 173,234.70 × 103,048.20
  4. Step 4: Simplify right side
    115,489.80x = 17,851,524,012.54
  5. Step 5: Solve for x
    x = 17,851,524,012.54/115,489.80
  6. Step 6: Final answer
    x = 154,572.30

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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.