Home / 135,284.36-186,650.10-81,585.80

Finding the Fourth Proportional to 135,284.36, 186,650.10 and 81,585.80

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Solution

The fourth proportional to 135,284.36, 186,650.10 and 81,585.80 is: 112,562.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,284.36 : 186,650.10 = 81,585.80 : x
  2. Step 2: Convert to fraction form
    135,284.36/186,650.10 = 81,585.80/x
  3. Step 3: Cross multiply
    135,284.36x = 186,650.10 × 81,585.80
  4. Step 4: Simplify right side
    135,284.36x = 15,227,997,728.58
  5. Step 5: Solve for x
    x = 15,227,997,728.58/135,284.36
  6. Step 6: Final answer
    x = 112,562.88

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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.