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Finding the Fourth Proportional to 160,328.85, 221,250.39 and 87,731.44

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Solution

The fourth proportional to 160,328.85, 221,250.39 and 87,731.44 is: 121,067.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,328.85 : 221,250.39 = 87,731.44 : x
  2. Step 2: Convert to fraction form
    160,328.85/221,250.39 = 87,731.44/x
  3. Step 3: Cross multiply
    160,328.85x = 221,250.39 × 87,731.44
  4. Step 4: Simplify right side
    160,328.85x = 19,410,615,315.26
  5. Step 5: Solve for x
    x = 19,410,615,315.26/160,328.85
  6. Step 6: Final answer
    x = 121,067.51

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1.5x scale

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.