Home / 170,865.20-256,297.80-87,921.20

Finding the Fourth Proportional to 170,865.20, 256,297.80 and 87,921.20

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Solution

The fourth proportional to 170,865.20, 256,297.80 and 87,921.20 is: 131,881.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,865.20 : 256,297.80 = 87,921.20 : x
  2. Step 2: Convert to fraction form
    170,865.20/256,297.80 = 87,921.20/x
  3. Step 3: Cross multiply
    170,865.20x = 256,297.80 × 87,921.20
  4. Step 4: Simplify right side
    170,865.20x = 22,534,010,133.36
  5. Step 5: Solve for x
    x = 22,534,010,133.36/170,865.20
  6. Step 6: Final answer
    x = 131,881.80

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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.