Home / 145,536.13-200,839.56-81,874

Finding the Fourth Proportional to 145,536.13, 200,839.56 and 81,874

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Solution

The fourth proportional to 145,536.13, 200,839.56 and 81,874 is: 112,985.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,536.13 : 200,839.56 = 81,874 : x
  2. Step 2: Convert to fraction form
    145,536.13/200,839.56 = 81,874/x
  3. Step 3: Cross multiply
    145,536.13x = 200,839.56 × 81,874
  4. Step 4: Simplify right side
    145,536.13x = 16,443,538,135.44
  5. Step 5: Solve for x
    x = 16,443,538,135.44/145,536.13
  6. Step 6: Final answer
    x = 112,985.95

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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.