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Finding the Fourth Proportional to 169,471.11, 253,896.81 and 79,348.47

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Solution

The fourth proportional to 169,471.11, 253,896.81 and 79,348.47 is: 118,877.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,471.11 : 253,896.81 = 79,348.47 : x
  2. Step 2: Convert to fraction form
    169,471.11/253,896.81 = 79,348.47/x
  3. Step 3: Cross multiply
    169,471.11x = 253,896.81 × 79,348.47
  4. Step 4: Simplify right side
    169,471.11x = 20,146,323,411.38
  5. Step 5: Solve for x
    x = 20,146,323,411.38/169,471.11
  6. Step 6: Final answer
    x = 118,877.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.