Home / 128,427.28-177,214.44-71,059

Finding the Fourth Proportional to 128,427.28, 177,214.44 and 71,059

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Solution

The fourth proportional to 128,427.28, 177,214.44 and 71,059 is: 98,053.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,427.28 : 177,214.44 = 71,059 : x
  2. Step 2: Convert to fraction form
    128,427.28/177,214.44 = 71,059/x
  3. Step 3: Cross multiply
    128,427.28x = 177,214.44 × 71,059
  4. Step 4: Simplify right side
    128,427.28x = 12,592,680,891.96
  5. Step 5: Solve for x
    x = 12,592,680,891.96/128,427.28
  6. Step 6: Final answer
    x = 98,053.01

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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.