Home / 88,290.63-131,604.21-81,204.75

Finding the Fourth Proportional to 88,290.63, 131,604.21 and 81,204.75

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Solution

The fourth proportional to 88,290.63, 131,604.21 and 81,204.75 is: 121,042.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,290.63 : 131,604.21 = 81,204.75 : x
  2. Step 2: Convert to fraction form
    88,290.63/131,604.21 = 81,204.75/x
  3. Step 3: Cross multiply
    88,290.63x = 131,604.21 × 81,204.75
  4. Step 4: Simplify right side
    88,290.63x = 10,686,886,972.00
  5. Step 5: Solve for x
    x = 10,686,886,972.00/88,290.63
  6. Step 6: Final answer
    x = 121,042.14

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.