Home / 127,258.40-190,909.20-38,511.20

Finding the Fourth Proportional to 127,258.40, 190,909.20 and 38,511.20

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Solution

The fourth proportional to 127,258.40, 190,909.20 and 38,511.20 is: 57,773.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,258.40 : 190,909.20 = 38,511.20 : x
  2. Step 2: Convert to fraction form
    127,258.40/190,909.20 = 38,511.20/x
  3. Step 3: Cross multiply
    127,258.40x = 190,909.20 × 38,511.20
  4. Step 4: Simplify right side
    127,258.40x = 7,352,142,383.04
  5. Step 5: Solve for x
    x = 7,352,142,383.04/127,258.40
  6. Step 6: Final answer
    x = 57,773.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.