Home / 127,833.40-191,750.10-81,292.60

Finding the Fourth Proportional to 127,833.40, 191,750.10 and 81,292.60

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Solution

The fourth proportional to 127,833.40, 191,750.10 and 81,292.60 is: 121,938.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,833.40 : 191,750.10 = 81,292.60 : x
  2. Step 2: Convert to fraction form
    127,833.40/191,750.10 = 81,292.60/x
  3. Step 3: Cross multiply
    127,833.40x = 191,750.10 × 81,292.60
  4. Step 4: Simplify right side
    127,833.40x = 15,587,864,179.26
  5. Step 5: Solve for x
    x = 15,587,864,179.26/127,833.40
  6. Step 6: Final answer
    x = 121,938.90

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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.