Home / 105,512.30-145,826.43-84,517.10

Finding the Fourth Proportional to 105,512.30, 145,826.43 and 84,517.10

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Solution

The fourth proportional to 105,512.30, 145,826.43 and 84,517.10 is: 116,809.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,512.30 : 145,826.43 = 84,517.10 : x
  2. Step 2: Convert to fraction form
    105,512.30/145,826.43 = 84,517.10/x
  3. Step 3: Cross multiply
    105,512.30x = 145,826.43 × 84,517.10
  4. Step 4: Simplify right side
    105,512.30x = 12,324,826,966.95
  5. Step 5: Solve for x
    x = 12,324,826,966.95/105,512.30
  6. Step 6: Final answer
    x = 116,809.39

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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.