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Finding the Fourth Proportional to 172,479, 238,020.96 and 97,027.50

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Solution

The fourth proportional to 172,479, 238,020.96 and 97,027.50 is: 133,897.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,479 : 238,020.96 = 97,027.50 : x
  2. Step 2: Convert to fraction form
    172,479/238,020.96 = 97,027.50/x
  3. Step 3: Cross multiply
    172,479x = 238,020.96 × 97,027.50
  4. Step 4: Simplify right side
    172,479x = 23,094,578,696.40
  5. Step 5: Solve for x
    x = 23,094,578,696.40/172,479
  6. Step 6: Final answer
    x = 133,897.92

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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.