Home / 81,131.18-112,037.70-76,713.44

Finding the Fourth Proportional to 81,131.18, 112,037.70 and 76,713.44

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Solution

The fourth proportional to 81,131.18, 112,037.70 and 76,713.44 is: 105,937.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,131.18 : 112,037.70 = 76,713.44 : x
  2. Step 2: Convert to fraction form
    81,131.18/112,037.70 = 76,713.44/x
  3. Step 3: Cross multiply
    81,131.18x = 112,037.70 × 76,713.44
  4. Step 4: Simplify right side
    81,131.18x = 8,594,797,376.69
  5. Step 5: Solve for x
    x = 8,594,797,376.69/81,131.18
  6. Step 6: Final answer
    x = 105,937.04

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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.