Home / 168,840.04-253,186.20-80,118.86

Finding the Fourth Proportional to 168,840.04, 253,186.20 and 80,118.86

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Solution

The fourth proportional to 168,840.04, 253,186.20 and 80,118.86 is: 120,143.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,840.04 : 253,186.20 = 80,118.86 : x
  2. Step 2: Convert to fraction form
    168,840.04/253,186.20 = 80,118.86/x
  3. Step 3: Cross multiply
    168,840.04x = 253,186.20 × 80,118.86
  4. Step 4: Simplify right side
    168,840.04x = 20,284,989,711.73
  5. Step 5: Solve for x
    x = 20,284,989,711.73/168,840.04
  6. Step 6: Final answer
    x = 120,143.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.