Home / 170,989.72-256,488.96-81,011.37

Finding the Fourth Proportional to 170,989.72, 256,488.96 and 81,011.37

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Solution

The fourth proportional to 170,989.72, 256,488.96 and 81,011.37 is: 121,519.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,989.72 : 256,488.96 = 81,011.37 : x
  2. Step 2: Convert to fraction form
    170,989.72/256,488.96 = 81,011.37/x
  3. Step 3: Cross multiply
    170,989.72x = 256,488.96 × 81,011.37
  4. Step 4: Simplify right side
    170,989.72x = 20,778,520,757.03
  5. Step 5: Solve for x
    x = 20,778,520,757.03/170,989.72
  6. Step 6: Final answer
    x = 121,519.12

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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.