Home / 120,685.20-181,200.60-68,197.20

Finding the Fourth Proportional to 120,685.20, 181,200.60 and 68,197.20

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Solution

The fourth proportional to 120,685.20, 181,200.60 and 68,197.20 is: 102,393.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,685.20 : 181,200.60 = 68,197.20 : x
  2. Step 2: Convert to fraction form
    120,685.20/181,200.60 = 68,197.20/x
  3. Step 3: Cross multiply
    120,685.20x = 181,200.60 × 68,197.20
  4. Step 4: Simplify right side
    120,685.20x = 12,357,373,558.32
  5. Step 5: Solve for x
    x = 12,357,373,558.32/120,685.20
  6. Step 6: Final answer
    x = 102,393.45

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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.