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Finding the Fourth Proportional to 145,480.63, 200,761.35 and 81,818.44

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Solution

The fourth proportional to 145,480.63, 200,761.35 and 81,818.44 is: 112,908.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,480.63 : 200,761.35 = 81,818.44 : x
  2. Step 2: Convert to fraction form
    145,480.63/200,761.35 = 81,818.44/x
  3. Step 3: Cross multiply
    145,480.63x = 200,761.35 × 81,818.44
  4. Step 4: Simplify right side
    145,480.63x = 16,425,980,469.29
  5. Step 5: Solve for x
    x = 16,425,980,469.29/145,480.63
  6. Step 6: Final answer
    x = 112,908.37

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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.