Home / 113,107.20-156,141.13-65,351.32

Finding the Fourth Proportional to 113,107.20, 156,141.13 and 65,351.32

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Solution

The fourth proportional to 113,107.20, 156,141.13 and 65,351.32 is: 90,215.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,107.20 : 156,141.13 = 65,351.32 : x
  2. Step 2: Convert to fraction form
    113,107.20/156,141.13 = 65,351.32/x
  3. Step 3: Cross multiply
    113,107.20x = 156,141.13 × 65,351.32
  4. Step 4: Simplify right side
    113,107.20x = 10,204,028,171.09
  5. Step 5: Solve for x
    x = 10,204,028,171.09/113,107.20
  6. Step 6: Final answer
    x = 90,215.55

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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.