Home / 187,412.20-281,021.10-69,022.60

Finding the Fourth Proportional to 187,412.20, 281,021.10 and 69,022.60

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Solution

The fourth proportional to 187,412.20, 281,021.10 and 69,022.60 is: 103,498.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,412.20 : 281,021.10 = 69,022.60 : x
  2. Step 2: Convert to fraction form
    187,412.20/281,021.10 = 69,022.60/x
  3. Step 3: Cross multiply
    187,412.20x = 281,021.10 × 69,022.60
  4. Step 4: Simplify right side
    187,412.20x = 19,396,806,976.86
  5. Step 5: Solve for x
    x = 19,396,806,976.86/187,412.20
  6. Step 6: Final answer
    x = 103,498.10

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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.