Home / 143,786.10-215,776.35-80,606.10

Finding the Fourth Proportional to 143,786.10, 215,776.35 and 80,606.10

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Solution

The fourth proportional to 143,786.10, 215,776.35 and 80,606.10 is: 120,963.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,786.10 : 215,776.35 = 80,606.10 : x
  2. Step 2: Convert to fraction form
    143,786.10/215,776.35 = 80,606.10/x
  3. Step 3: Cross multiply
    143,786.10x = 215,776.35 × 80,606.10
  4. Step 4: Simplify right side
    143,786.10x = 17,392,890,045.74
  5. Step 5: Solve for x
    x = 17,392,890,045.74/143,786.10
  6. Step 6: Final answer
    x = 120,963.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.