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Finding the Fourth Proportional to 112,028.95, 154,387.29 and 80,142.49

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Solution

The fourth proportional to 112,028.95, 154,387.29 and 80,142.49 is: 110,444.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,028.95 : 154,387.29 = 80,142.49 : x
  2. Step 2: Convert to fraction form
    112,028.95/154,387.29 = 80,142.49/x
  3. Step 3: Cross multiply
    112,028.95x = 154,387.29 × 80,142.49
  4. Step 4: Simplify right side
    112,028.95x = 12,372,981,844.95
  5. Step 5: Solve for x
    x = 12,372,981,844.95/112,028.95
  6. Step 6: Final answer
    x = 110,444.50

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.