Home / 155,564.20-214,640.58-87,567.40

Finding the Fourth Proportional to 155,564.20, 214,640.58 and 87,567.40

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Solution

The fourth proportional to 155,564.20, 214,640.58 and 87,567.40 is: 120,821.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,564.20 : 214,640.58 = 87,567.40 : x
  2. Step 2: Convert to fraction form
    155,564.20/214,640.58 = 87,567.40/x
  3. Step 3: Cross multiply
    155,564.20x = 214,640.58 × 87,567.40
  4. Step 4: Simplify right side
    155,564.20x = 18,795,517,525.09
  5. Step 5: Solve for x
    x = 18,795,517,525.09/155,564.20
  6. Step 6: Final answer
    x = 120,821.61

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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.