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Finding the Fourth Proportional to 118,400.78, 176,737.44 and 103,453.85

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Solution

The fourth proportional to 118,400.78, 176,737.44 and 103,453.85 is: 154,426.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,400.78 : 176,737.44 = 103,453.85 : x
  2. Step 2: Convert to fraction form
    118,400.78/176,737.44 = 103,453.85/x
  3. Step 3: Cross multiply
    118,400.78x = 176,737.44 × 103,453.85
  4. Step 4: Simplify right side
    118,400.78x = 18,284,169,436.94
  5. Step 5: Solve for x
    x = 18,284,169,436.94/118,400.78
  6. Step 6: Final answer
    x = 154,426.09

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.