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Finding the Fourth Proportional to 127,850.40, 176,425.20 and 71,258.40

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Solution

The fourth proportional to 127,850.40, 176,425.20 and 71,258.40 is: 98,331.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,850.40 : 176,425.20 = 71,258.40 : x
  2. Step 2: Convert to fraction form
    127,850.40/176,425.20 = 71,258.40/x
  3. Step 3: Cross multiply
    127,850.40x = 176,425.20 × 71,258.40
  4. Step 4: Simplify right side
    127,850.40x = 12,571,777,471.68
  5. Step 5: Solve for x
    x = 12,571,777,471.68/127,850.40
  6. Step 6: Final answer
    x = 98,331.94

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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.