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Finding the Fourth Proportional to 170,274.88, 255,411.84 and 76,671.04

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Solution

The fourth proportional to 170,274.88, 255,411.84 and 76,671.04 is: 115,006.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,274.88 : 255,411.84 = 76,671.04 : x
  2. Step 2: Convert to fraction form
    170,274.88/255,411.84 = 76,671.04/x
  3. Step 3: Cross multiply
    170,274.88x = 255,411.84 × 76,671.04
  4. Step 4: Simplify right side
    170,274.88x = 19,582,691,401.11
  5. Step 5: Solve for x
    x = 19,582,691,401.11/170,274.88
  6. Step 6: Final answer
    x = 115,006.34

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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.