Home / 143,471.90-197,984.58-79,814

Finding the Fourth Proportional to 143,471.90, 197,984.58 and 79,814

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Solution

The fourth proportional to 143,471.90, 197,984.58 and 79,814 is: 110,139.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,471.90 : 197,984.58 = 79,814 : x
  2. Step 2: Convert to fraction form
    143,471.90/197,984.58 = 79,814/x
  3. Step 3: Cross multiply
    143,471.90x = 197,984.58 × 79,814
  4. Step 4: Simplify right side
    143,471.90x = 15,801,941,268.12
  5. Step 5: Solve for x
    x = 15,801,941,268.12/143,471.90
  6. Step 6: Final answer
    x = 110,139.63

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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.