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Finding the Fourth Proportional to 109,805.78, 164,637.56 and 72,252.14

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Solution

The fourth proportional to 109,805.78, 164,637.56 and 72,252.14 is: 108,331.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,805.78 : 164,637.56 = 72,252.14 : x
  2. Step 2: Convert to fraction form
    109,805.78/164,637.56 = 72,252.14/x
  3. Step 3: Cross multiply
    109,805.78x = 164,637.56 × 72,252.14
  4. Step 4: Simplify right side
    109,805.78x = 11,895,416,034.38
  5. Step 5: Solve for x
    x = 11,895,416,034.38/109,805.78
  6. Step 6: Final answer
    x = 108,331.42

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1.5x scale

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.