Home / 128,621.28-177,493.24-71,258.24

Finding the Fourth Proportional to 128,621.28, 177,493.24 and 71,258.24

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Solution

The fourth proportional to 128,621.28, 177,493.24 and 71,258.24 is: 98,334.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,621.28 : 177,493.24 = 71,258.24 : x
  2. Step 2: Convert to fraction form
    128,621.28/177,493.24 = 71,258.24/x
  3. Step 3: Cross multiply
    128,621.28x = 177,493.24 × 71,258.24
  4. Step 4: Simplify right side
    128,621.28x = 12,647,855,894.30
  5. Step 5: Solve for x
    x = 12,647,855,894.30/128,621.28
  6. Step 6: Final answer
    x = 98,334.09

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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.