Home / 142,789.80-213,995.70-76,086.30

Finding the Fourth Proportional to 142,789.80, 213,995.70 and 76,086.30

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Solution

The fourth proportional to 142,789.80, 213,995.70 and 76,086.30 is: 114,028.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,789.80 : 213,995.70 = 76,086.30 : x
  2. Step 2: Convert to fraction form
    142,789.80/213,995.70 = 76,086.30/x
  3. Step 3: Cross multiply
    142,789.80x = 213,995.70 × 76,086.30
  4. Step 4: Simplify right side
    142,789.80x = 16,282,141,028.91
  5. Step 5: Solve for x
    x = 16,282,141,028.91/142,789.80
  6. Step 6: Final answer
    x = 114,028.74

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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.