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Finding the Fourth Proportional to 425,151.54, 637,764.03 and 109,605.78

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Solution

The fourth proportional to 425,151.54, 637,764.03 and 109,605.78 is: 164,418.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,151.54 : 637,764.03 = 109,605.78 : x
  2. Step 2: Convert to fraction form
    425,151.54/637,764.03 = 109,605.78/x
  3. Step 3: Cross multiply
    425,151.54x = 637,764.03 × 109,605.78
  4. Step 4: Simplify right side
    425,151.54x = 69,902,623,964.09
  5. Step 5: Solve for x
    x = 69,902,623,964.09/425,151.54
  6. Step 6: Final answer
    x = 164,418.14

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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.