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Finding the Fourth Proportional to 169,286.21, 253,710.61 and 80,566.91

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Solution

The fourth proportional to 169,286.21, 253,710.61 and 80,566.91 is: 120,746.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,286.21 : 253,710.61 = 80,566.91 : x
  2. Step 2: Convert to fraction form
    169,286.21/253,710.61 = 80,566.91/x
  3. Step 3: Cross multiply
    169,286.21x = 253,710.61 × 80,566.91
  4. Step 4: Simplify right side
    169,286.21x = 20,440,679,881.92
  5. Step 5: Solve for x
    x = 20,440,679,881.92/169,286.21
  6. Step 6: Final answer
    x = 120,746.28

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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.