Home / 142,786.80-213,991.20-76,083.30

Finding the Fourth Proportional to 142,786.80, 213,991.20 and 76,083.30

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Solution

The fourth proportional to 142,786.80, 213,991.20 and 76,083.30 is: 114,024.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,786.80 : 213,991.20 = 76,083.30 : x
  2. Step 2: Convert to fraction form
    142,786.80/213,991.20 = 76,083.30/x
  3. Step 3: Cross multiply
    142,786.80x = 213,991.20 × 76,083.30
  4. Step 4: Simplify right side
    142,786.80x = 16,281,156,666.96
  5. Step 5: Solve for x
    x = 16,281,156,666.96/142,786.80
  6. Step 6: Final answer
    x = 114,024.24

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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.