Home / 87,172.20-130,595.90-73,222.79

Finding the Fourth Proportional to 87,172.20, 130,595.90 and 73,222.79

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Solution

The fourth proportional to 87,172.20, 130,595.90 and 73,222.79 is: 109,697.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,172.20 : 130,595.90 = 73,222.79 : x
  2. Step 2: Convert to fraction form
    87,172.20/130,595.90 = 73,222.79/x
  3. Step 3: Cross multiply
    87,172.20x = 130,595.90 × 73,222.79
  4. Step 4: Simplify right side
    87,172.20x = 9,562,595,141.47
  5. Step 5: Solve for x
    x = 9,562,595,141.47/87,172.20
  6. Step 6: Final answer
    x = 109,697.76

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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.