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Finding the Fourth Proportional to 169,142.64, 253,797.32 and 79,191.43

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Solution

The fourth proportional to 169,142.64, 253,797.32 and 79,191.43 is: 118,826.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,142.64 : 253,797.32 = 79,191.43 : x
  2. Step 2: Convert to fraction form
    169,142.64/253,797.32 = 79,191.43/x
  3. Step 3: Cross multiply
    169,142.64x = 253,797.32 × 79,191.43
  4. Step 4: Simplify right side
    169,142.64x = 20,098,572,700.97
  5. Step 5: Solve for x
    x = 20,098,572,700.97/169,142.64
  6. Step 6: Final answer
    x = 118,826.17

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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.