Home / 138,104.55-190,587.60-76,851.54

Finding the Fourth Proportional to 138,104.55, 190,587.60 and 76,851.54

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Solution

The fourth proportional to 138,104.55, 190,587.60 and 76,851.54 is: 106,056.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,104.55 : 190,587.60 = 76,851.54 : x
  2. Step 2: Convert to fraction form
    138,104.55/190,587.60 = 76,851.54/x
  3. Step 3: Cross multiply
    138,104.55x = 190,587.60 × 76,851.54
  4. Step 4: Simplify right side
    138,104.55x = 14,646,950,564.90
  5. Step 5: Solve for x
    x = 14,646,950,564.90/138,104.55
  6. Step 6: Final answer
    x = 106,056.97

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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.