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Finding the Fourth Proportional to 172,430.52, 237,951.78 and 96,979.02

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Solution

The fourth proportional to 172,430.52, 237,951.78 and 96,979.02 is: 133,829.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,430.52 : 237,951.78 = 96,979.02 : x
  2. Step 2: Convert to fraction form
    172,430.52/237,951.78 = 96,979.02/x
  3. Step 3: Cross multiply
    172,430.52x = 237,951.78 × 96,979.02
  4. Step 4: Simplify right side
    172,430.52x = 23,076,330,431.66
  5. Step 5: Solve for x
    x = 23,076,330,431.66/172,430.52
  6. Step 6: Final answer
    x = 133,829.73

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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.