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Finding the Fourth Proportional to 145,474.68, 200,763 and 81,816.24

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Solution

The fourth proportional to 145,474.68, 200,763 and 81,816.24 is: 112,910.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,474.68 : 200,763 = 81,816.24 : x
  2. Step 2: Convert to fraction form
    145,474.68/200,763 = 81,816.24/x
  3. Step 3: Cross multiply
    145,474.68x = 200,763 × 81,816.24
  4. Step 4: Simplify right side
    145,474.68x = 16,425,673,791.12
  5. Step 5: Solve for x
    x = 16,425,673,791.12/145,474.68
  6. Step 6: Final answer
    x = 112,910.88

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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.