Home / 155,470.21-214,546.38-87,487.15

Finding the Fourth Proportional to 155,470.21, 214,546.38 and 87,487.15

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Solution

The fourth proportional to 155,470.21, 214,546.38 and 87,487.15 is: 120,730.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,470.21 : 214,546.38 = 87,487.15 : x
  2. Step 2: Convert to fraction form
    155,470.21/214,546.38 = 87,487.15/x
  3. Step 3: Cross multiply
    155,470.21x = 214,546.38 × 87,487.15
  4. Step 4: Simplify right side
    155,470.21x = 18,770,051,783.70
  5. Step 5: Solve for x
    x = 18,770,051,783.70/155,470.21
  6. Step 6: Final answer
    x = 120,730.85

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1.5x scale

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.