Home / 143,179.95-197,604.00-81,931.80

Finding the Fourth Proportional to 143,179.95, 197,604.00 and 81,931.80

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Solution

The fourth proportional to 143,179.95, 197,604.00 and 81,931.80 is: 113,074.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,179.95 : 197,604.00 = 81,931.80 : x
  2. Step 2: Convert to fraction form
    143,179.95/197,604.00 = 81,931.80/x
  3. Step 3: Cross multiply
    143,179.95x = 197,604.00 × 81,931.80
  4. Step 4: Simplify right side
    143,179.95x = 16,190,051,202.37
  5. Step 5: Solve for x
    x = 16,190,051,202.37/143,179.95
  6. Step 6: Final answer
    x = 113,074.85

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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.