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Finding the Fourth Proportional to 138,603.54, 191,229.22 and 84,832.50

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Solution

The fourth proportional to 138,603.54, 191,229.22 and 84,832.50 is: 117,042.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,603.54 : 191,229.22 = 84,832.50 : x
  2. Step 2: Convert to fraction form
    138,603.54/191,229.22 = 84,832.50/x
  3. Step 3: Cross multiply
    138,603.54x = 191,229.22 × 84,832.50
  4. Step 4: Simplify right side
    138,603.54x = 16,222,451,637.42
  5. Step 5: Solve for x
    x = 16,222,451,637.42/138,603.54
  6. Step 6: Final answer
    x = 117,042.12

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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.