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Finding the Fourth Proportional to 172,879, 238,573.02 and 97,430.20

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Solution

The fourth proportional to 172,879, 238,573.02 and 97,430.20 is: 134,453.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,879 : 238,573.02 = 97,430.20 : x
  2. Step 2: Convert to fraction form
    172,879/238,573.02 = 97,430.20/x
  3. Step 3: Cross multiply
    172,879x = 238,573.02 × 97,430.20
  4. Step 4: Simplify right side
    172,879x = 23,244,217,053.20
  5. Step 5: Solve for x
    x = 23,244,217,053.20/172,879
  6. Step 6: Final answer
    x = 134,453.68

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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.