Home / 143,212.88-197,601.96-86,623.04

Finding the Fourth Proportional to 143,212.88, 197,601.96 and 86,623.04

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Solution

The fourth proportional to 143,212.88, 197,601.96 and 86,623.04 is: 119,520.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,212.88 : 197,601.96 = 86,623.04 : x
  2. Step 2: Convert to fraction form
    143,212.88/197,601.96 = 86,623.04/x
  3. Step 3: Cross multiply
    143,212.88x = 197,601.96 × 86,623.04
  4. Step 4: Simplify right side
    143,212.88x = 17,116,882,485.16
  5. Step 5: Solve for x
    x = 17,116,882,485.16/143,212.88
  6. Step 6: Final answer
    x = 119,520.55

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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.