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Finding the Fourth Proportional to 169,787.63, 254,681.17 and 45,128.63

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Solution

The fourth proportional to 169,787.63, 254,681.17 and 45,128.63 is: 67,692.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,787.63 : 254,681.17 = 45,128.63 : x
  2. Step 2: Convert to fraction form
    169,787.63/254,681.17 = 45,128.63/x
  3. Step 3: Cross multiply
    169,787.63x = 254,681.17 × 45,128.63
  4. Step 4: Simplify right side
    169,787.63x = 11,493,412,288.90
  5. Step 5: Solve for x
    x = 11,493,412,288.90/169,787.63
  6. Step 6: Final answer
    x = 67,692.87

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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.