Home / 135,451.24-186,924.08-81,725.86

Finding the Fourth Proportional to 135,451.24, 186,924.08 and 81,725.86

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Solution

The fourth proportional to 135,451.24, 186,924.08 and 81,725.86 is: 112,782.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,451.24 : 186,924.08 = 81,725.86 : x
  2. Step 2: Convert to fraction form
    135,451.24/186,924.08 = 81,725.86/x
  3. Step 3: Cross multiply
    135,451.24x = 186,924.08 × 81,725.86
  4. Step 4: Simplify right side
    135,451.24x = 15,276,531,192.71
  5. Step 5: Solve for x
    x = 15,276,531,192.71/135,451.24
  6. Step 6: Final answer
    x = 112,782.51

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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.