Home / 143,068.12-197,388.30-82,630.78

Finding the Fourth Proportional to 143,068.12, 197,388.30 and 82,630.78

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Solution

The fourth proportional to 143,068.12, 197,388.30 and 82,630.78 is: 114,004.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,068.12 : 197,388.30 = 82,630.78 : x
  2. Step 2: Convert to fraction form
    143,068.12/197,388.30 = 82,630.78/x
  3. Step 3: Cross multiply
    143,068.12x = 197,388.30 × 82,630.78
  4. Step 4: Simplify right side
    143,068.12x = 16,310,349,191.87
  5. Step 5: Solve for x
    x = 16,310,349,191.87/143,068.12
  6. Step 6: Final answer
    x = 114,004.08

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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.