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Finding the Fourth Proportional to 187,819.50, 259,190.91 and 108,331.50

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Solution

The fourth proportional to 187,819.50, 259,190.91 and 108,331.50 is: 149,497.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,819.50 : 259,190.91 = 108,331.50 : x
  2. Step 2: Convert to fraction form
    187,819.50/259,190.91 = 108,331.50/x
  3. Step 3: Cross multiply
    187,819.50x = 259,190.91 × 108,331.50
  4. Step 4: Simplify right side
    187,819.50x = 28,078,540,066.67
  5. Step 5: Solve for x
    x = 28,078,540,066.67/187,819.50
  6. Step 6: Final answer
    x = 149,497.47

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1.5x scale

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.