Home / 189,663.39-261,753.57-103,635.44

Finding the Fourth Proportional to 189,663.39, 261,753.57 and 103,635.44

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Solution

The fourth proportional to 189,663.39, 261,753.57 and 103,635.44 is: 143,026.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,663.39 : 261,753.57 = 103,635.44 : x
  2. Step 2: Convert to fraction form
    189,663.39/261,753.57 = 103,635.44/x
  3. Step 3: Cross multiply
    189,663.39x = 261,753.57 × 103,635.44
  4. Step 4: Simplify right side
    189,663.39x = 27,126,946,398.52
  5. Step 5: Solve for x
    x = 27,126,946,398.52/189,663.39
  6. Step 6: Final answer
    x = 143,026.79

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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.