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Finding the Fourth Proportional to 189,572.70, 261,610.13 and 104,689.56

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Solution

The fourth proportional to 189,572.70, 261,610.13 and 104,689.56 is: 144,471.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,572.70 : 261,610.13 = 104,689.56 : x
  2. Step 2: Convert to fraction form
    189,572.70/261,610.13 = 104,689.56/x
  3. Step 3: Cross multiply
    189,572.70x = 261,610.13 × 104,689.56
  4. Step 4: Simplify right side
    189,572.70x = 27,387,849,401.24
  5. Step 5: Solve for x
    x = 27,387,849,401.24/189,572.70
  6. Step 6: Final answer
    x = 144,471.48

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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.