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Finding the Fourth Proportional to 191,637.85, 287,512.26 and 79,297.33

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Solution

The fourth proportional to 191,637.85, 287,512.26 and 79,297.33 is: 118,968.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,637.85 : 287,512.26 = 79,297.33 : x
  2. Step 2: Convert to fraction form
    191,637.85/287,512.26 = 79,297.33/x
  3. Step 3: Cross multiply
    191,637.85x = 287,512.26 × 79,297.33
  4. Step 4: Simplify right side
    191,637.85x = 22,798,954,560.27
  5. Step 5: Solve for x
    x = 22,798,954,560.27/191,637.85
  6. Step 6: Final answer
    x = 118,968.95

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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.