Home / 131,964.21-181,993.02-102,899.78

Finding the Fourth Proportional to 131,964.21, 181,993.02 and 102,899.78

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Solution

The fourth proportional to 131,964.21, 181,993.02 and 102,899.78 is: 141,910.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,964.21 : 181,993.02 = 102,899.78 : x
  2. Step 2: Convert to fraction form
    131,964.21/181,993.02 = 102,899.78/x
  3. Step 3: Cross multiply
    131,964.21x = 181,993.02 × 102,899.78
  4. Step 4: Simplify right side
    131,964.21x = 18,727,041,719.54
  5. Step 5: Solve for x
    x = 18,727,041,719.54/131,964.21
  6. Step 6: Final answer
    x = 141,910.01

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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.