Home / 135,555.84-187,022.25-81,820.44

Finding the Fourth Proportional to 135,555.84, 187,022.25 and 81,820.44

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Solution

The fourth proportional to 135,555.84, 187,022.25 and 81,820.44 is: 112,885.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,555.84 : 187,022.25 = 81,820.44 : x
  2. Step 2: Convert to fraction form
    135,555.84/187,022.25 = 81,820.44/x
  3. Step 3: Cross multiply
    135,555.84x = 187,022.25 × 81,820.44
  4. Step 4: Simplify right side
    135,555.84x = 15,302,242,784.79
  5. Step 5: Solve for x
    x = 15,302,242,784.79/135,555.84
  6. Step 6: Final answer
    x = 112,885.16

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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.