Home / 135,281.36-186,645.96-81,582.80

Finding the Fourth Proportional to 135,281.36, 186,645.96 and 81,582.80

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Solution

The fourth proportional to 135,281.36, 186,645.96 and 81,582.80 is: 112,558.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,281.36 : 186,645.96 = 81,582.80 : x
  2. Step 2: Convert to fraction form
    135,281.36/186,645.96 = 81,582.80/x
  3. Step 3: Cross multiply
    135,281.36x = 186,645.96 × 81,582.80
  4. Step 4: Simplify right side
    135,281.36x = 15,227,100,025.49
  5. Step 5: Solve for x
    x = 15,227,100,025.49/135,281.36
  6. Step 6: Final answer
    x = 112,558.74

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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.