Home / 123,338.44-170,188.86-72,331.88

Finding the Fourth Proportional to 123,338.44, 170,188.86 and 72,331.88

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Solution

The fourth proportional to 123,338.44, 170,188.86 and 72,331.88 is: 99,807.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,338.44 : 170,188.86 = 72,331.88 : x
  2. Step 2: Convert to fraction form
    123,338.44/170,188.86 = 72,331.88/x
  3. Step 3: Cross multiply
    123,338.44x = 170,188.86 × 72,331.88
  4. Step 4: Simplify right side
    123,338.44x = 12,310,080,198.86
  5. Step 5: Solve for x
    x = 12,310,080,198.86/123,338.44
  6. Step 6: Final answer
    x = 99,807.33

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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.