Home / 158,829.82-219,183.63-87,209.21

Finding the Fourth Proportional to 158,829.82, 219,183.63 and 87,209.21

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Solution

The fourth proportional to 158,829.82, 219,183.63 and 87,209.21 is: 120,347.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,829.82 : 219,183.63 = 87,209.21 : x
  2. Step 2: Convert to fraction form
    158,829.82/219,183.63 = 87,209.21/x
  3. Step 3: Cross multiply
    158,829.82x = 219,183.63 × 87,209.21
  4. Step 4: Simplify right side
    158,829.82x = 19,114,831,217.23
  5. Step 5: Solve for x
    x = 19,114,831,217.23/158,829.82
  6. Step 6: Final answer
    x = 120,347.88

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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.