Home / 155,517.94-214,621.58-87,539.30

Finding the Fourth Proportional to 155,517.94, 214,621.58 and 87,539.30

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Solution

The fourth proportional to 155,517.94, 214,621.58 and 87,539.30 is: 120,808.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,517.94 : 214,621.58 = 87,539.30 : x
  2. Step 2: Convert to fraction form
    155,517.94/214,621.58 = 87,539.30/x
  3. Step 3: Cross multiply
    155,517.94x = 214,621.58 × 87,539.30
  4. Step 4: Simplify right side
    155,517.94x = 18,787,822,878.09
  5. Step 5: Solve for x
    x = 18,787,822,878.09/155,517.94
  6. Step 6: Final answer
    x = 120,808.07

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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.