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Finding the Fourth Proportional to 155,520, 214,636.50 and 87,562.44

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Solution

The fourth proportional to 155,520, 214,636.50 and 87,562.44 is: 120,846.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,520 : 214,636.50 = 87,562.44 : x
  2. Step 2: Convert to fraction form
    155,520/214,636.50 = 87,562.44/x
  3. Step 3: Cross multiply
    155,520x = 214,636.50 × 87,562.44
  4. Step 4: Simplify right side
    155,520x = 18,794,095,653.06
  5. Step 5: Solve for x
    x = 18,794,095,653.06/155,520
  6. Step 6: Final answer
    x = 120,846.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.