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Finding the Fourth Proportional to 155,676.60, 233,579.70 and 76,791.78

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Solution

The fourth proportional to 155,676.60, 233,579.70 and 76,791.78 is: 115,219.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,676.60 : 233,579.70 = 76,791.78 : x
  2. Step 2: Convert to fraction form
    155,676.60/233,579.70 = 76,791.78/x
  3. Step 3: Cross multiply
    155,676.60x = 233,579.70 × 76,791.78
  4. Step 4: Simplify right side
    155,676.60x = 17,937,000,934.87
  5. Step 5: Solve for x
    x = 17,937,000,934.87/155,676.60
  6. Step 6: Final answer
    x = 115,219.63

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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.