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Finding the Fourth Proportional to 191,451.88, 287,274.69 and 79,212.64

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Solution

The fourth proportional to 191,451.88, 287,274.69 and 79,212.64 is: 118,859.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,451.88 : 287,274.69 = 79,212.64 : x
  2. Step 2: Convert to fraction form
    191,451.88/287,274.69 = 79,212.64/x
  3. Step 3: Cross multiply
    191,451.88x = 287,274.69 × 79,212.64
  4. Step 4: Simplify right side
    191,451.88x = 22,755,786,600.08
  5. Step 5: Solve for x
    x = 22,755,786,600.08/191,451.88
  6. Step 6: Final answer
    x = 118,859.04

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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.