Home / 189,663.47-261,753.69-103,635.53

Finding the Fourth Proportional to 189,663.47, 261,753.69 and 103,635.53

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Solution

The fourth proportional to 189,663.47, 261,753.69 and 103,635.53 is: 143,026.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,663.47 : 261,753.69 = 103,635.53 : x
  2. Step 2: Convert to fraction form
    189,663.47/261,753.69 = 103,635.53/x
  3. Step 3: Cross multiply
    189,663.47x = 261,753.69 × 103,635.53
  4. Step 4: Simplify right side
    189,663.47x = 27,126,981,083.84
  5. Step 5: Solve for x
    x = 27,126,981,083.84/189,663.47
  6. Step 6: Final answer
    x = 143,026.92

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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.