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Finding the Fourth Proportional to 185,669.88, 278,540.64 and 79,051.90

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Solution

The fourth proportional to 185,669.88, 278,540.64 and 79,051.90 is: 118,593.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,669.88 : 278,540.64 = 79,051.90 : x
  2. Step 2: Convert to fraction form
    185,669.88/278,540.64 = 79,051.90/x
  3. Step 3: Cross multiply
    185,669.88x = 278,540.64 × 79,051.90
  4. Step 4: Simplify right side
    185,669.88x = 22,019,166,819.22
  5. Step 5: Solve for x
    x = 22,019,166,819.22/185,669.88
  6. Step 6: Final answer
    x = 118,593.10

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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.