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Finding the Fourth Proportional to 147,801.45, 203,965.99 and 79,818.43

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Solution

The fourth proportional to 147,801.45, 203,965.99 and 79,818.43 is: 110,149.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,801.45 : 203,965.99 = 79,818.43 : x
  2. Step 2: Convert to fraction form
    147,801.45/203,965.99 = 79,818.43/x
  3. Step 3: Cross multiply
    147,801.45x = 203,965.99 × 79,818.43
  4. Step 4: Simplify right side
    147,801.45x = 16,280,243,676.27
  5. Step 5: Solve for x
    x = 16,280,243,676.27/147,801.45
  6. Step 6: Final answer
    x = 110,149.42

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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.