Home / 221,137.48-305,169.81-125,644.30

Finding the Fourth Proportional to 221,137.48, 305,169.81 and 125,644.30

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Solution

The fourth proportional to 221,137.48, 305,169.81 and 125,644.30 is: 173,389.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,137.48 : 305,169.81 = 125,644.30 : x
  2. Step 2: Convert to fraction form
    221,137.48/305,169.81 = 125,644.30/x
  3. Step 3: Cross multiply
    221,137.48x = 305,169.81 × 125,644.30
  4. Step 4: Simplify right side
    221,137.48x = 38,342,847,158.58
  5. Step 5: Solve for x
    x = 38,342,847,158.58/221,137.48
  6. Step 6: Final answer
    x = 173,389.18

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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.