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Finding the Fourth Proportional to 425,149.54, 637,761.03 and 109,603.78

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Solution

The fourth proportional to 425,149.54, 637,761.03 and 109,603.78 is: 164,415.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,149.54 : 637,761.03 = 109,603.78 : x
  2. Step 2: Convert to fraction form
    425,149.54/637,761.03 = 109,603.78/x
  3. Step 3: Cross multiply
    425,149.54x = 637,761.03 × 109,603.78
  4. Step 4: Simplify right side
    425,149.54x = 69,901,019,624.69
  5. Step 5: Solve for x
    x = 69,901,019,624.69/425,149.54
  6. Step 6: Final answer
    x = 164,415.14

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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.