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Finding the Fourth Proportional to 155,506.46, 214,609.77 and 87,529.95

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Solution

The fourth proportional to 155,506.46, 214,609.77 and 87,529.95 is: 120,797.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,506.46 : 214,609.77 = 87,529.95 : x
  2. Step 2: Convert to fraction form
    155,506.46/214,609.77 = 87,529.95/x
  3. Step 3: Cross multiply
    155,506.46x = 214,609.77 × 87,529.95
  4. Step 4: Simplify right side
    155,506.46x = 18,784,782,437.61
  5. Step 5: Solve for x
    x = 18,784,782,437.61/155,506.46
  6. Step 6: Final answer
    x = 120,797.44

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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.