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Finding the Fourth Proportional to 198,612.79, 274,087.43 and 107,968.93

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Solution

The fourth proportional to 198,612.79, 274,087.43 and 107,968.93 is: 148,998.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,612.79 : 274,087.43 = 107,968.93 : x
  2. Step 2: Convert to fraction form
    198,612.79/274,087.43 = 107,968.93/x
  3. Step 3: Cross multiply
    198,612.79x = 274,087.43 × 107,968.93
  4. Step 4: Simplify right side
    198,612.79x = 29,592,926,813.47
  5. Step 5: Solve for x
    x = 29,592,926,813.47/198,612.79
  6. Step 6: Final answer
    x = 148,998.09

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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.