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Finding the Fourth Proportional to 155,714.40, 233,716.90 and 79,869.88

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Solution

The fourth proportional to 155,714.40, 233,716.90 and 79,869.88 is: 119,879.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,714.40 : 233,716.90 = 79,869.88 : x
  2. Step 2: Convert to fraction form
    155,714.40/233,716.90 = 79,869.88/x
  3. Step 3: Cross multiply
    155,714.40x = 233,716.90 × 79,869.88
  4. Step 4: Simplify right side
    155,714.40x = 18,666,940,756.97
  5. Step 5: Solve for x
    x = 18,666,940,756.97/155,714.40
  6. Step 6: Final answer
    x = 119,879.35

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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.