Home / 159,586.74-220,239.55-87,966.60

Finding the Fourth Proportional to 159,586.74, 220,239.55 and 87,966.60

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Solution

The fourth proportional to 159,586.74, 220,239.55 and 87,966.60 is: 121,399.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,586.74 : 220,239.55 = 87,966.60 : x
  2. Step 2: Convert to fraction form
    159,586.74/220,239.55 = 87,966.60/x
  3. Step 3: Cross multiply
    159,586.74x = 220,239.55 × 87,966.60
  4. Step 4: Simplify right side
    159,586.74x = 19,373,723,297.83
  5. Step 5: Solve for x
    x = 19,373,723,297.83/159,586.74
  6. Step 6: Final answer
    x = 121,399.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.