Home / 126,403.92-174,414.60-81,666

Finding the Fourth Proportional to 126,403.92, 174,414.60 and 81,666

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Solution

The fourth proportional to 126,403.92, 174,414.60 and 81,666 is: 112,684.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,403.92 : 174,414.60 = 81,666 : x
  2. Step 2: Convert to fraction form
    126,403.92/174,414.60 = 81,666/x
  3. Step 3: Cross multiply
    126,403.92x = 174,414.60 × 81,666
  4. Step 4: Simplify right side
    126,403.92x = 14,243,742,723.60
  5. Step 5: Solve for x
    x = 14,243,742,723.60/126,403.92
  6. Step 6: Final answer
    x = 112,684.34

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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.