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Finding the Fourth Proportional to 184,979.60, 277,542.30 and 72,640.70

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Solution

The fourth proportional to 184,979.60, 277,542.30 and 72,640.70 is: 108,989.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    184,979.60 : 277,542.30 = 72,640.70 : x
  2. Step 2: Convert to fraction form
    184,979.60/277,542.30 = 72,640.70/x
  3. Step 3: Cross multiply
    184,979.60x = 277,542.30 × 72,640.70
  4. Step 4: Simplify right side
    184,979.60x = 20,160,866,951.61
  5. Step 5: Solve for x
    x = 20,160,866,951.61/184,979.60
  6. Step 6: Final answer
    x = 108,989.68

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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.