Home / 135,284.16-186,767.22-81,582.78

Finding the Fourth Proportional to 135,284.16, 186,767.22 and 81,582.78

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Solution

The fourth proportional to 135,284.16, 186,767.22 and 81,582.78 is: 112,629.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,284.16 : 186,767.22 = 81,582.78 : x
  2. Step 2: Convert to fraction form
    135,284.16/186,767.22 = 81,582.78/x
  3. Step 3: Cross multiply
    135,284.16x = 186,767.22 × 81,582.78
  4. Step 4: Simplify right side
    135,284.16x = 15,236,989,020.47
  5. Step 5: Solve for x
    x = 15,236,989,020.47/135,284.16
  6. Step 6: Final answer
    x = 112,629.51

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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.