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Finding the Fourth Proportional to 198,625.84, 274,108.96 and 107,987.92

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Solution

The fourth proportional to 198,625.84, 274,108.96 and 107,987.92 is: 149,026.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,625.84 : 274,108.96 = 107,987.92 : x
  2. Step 2: Convert to fraction form
    198,625.84/274,108.96 = 107,987.92/x
  3. Step 3: Cross multiply
    198,625.84x = 274,108.96 × 107,987.92
  4. Step 4: Simplify right side
    198,625.84x = 29,600,456,443.76
  5. Step 5: Solve for x
    x = 29,600,456,443.76/198,625.84
  6. Step 6: Final answer
    x = 149,026.21

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1.5x scale

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.