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Finding the Fourth Proportional to 134,577.20, 185,674.50 and 80,874.20

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Solution

The fourth proportional to 134,577.20, 185,674.50 and 80,874.20 is: 111,581.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,577.20 : 185,674.50 = 80,874.20 : x
  2. Step 2: Convert to fraction form
    134,577.20/185,674.50 = 80,874.20/x
  3. Step 3: Cross multiply
    134,577.20x = 185,674.50 × 80,874.20
  4. Step 4: Simplify right side
    134,577.20x = 15,016,276,647.90
  5. Step 5: Solve for x
    x = 15,016,276,647.90/134,577.20
  6. Step 6: Final answer
    x = 111,581.13

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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.