Home / 87,777.56-121,216.68-82,995.68

Finding the Fourth Proportional to 87,777.56, 121,216.68 and 82,995.68

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Solution

The fourth proportional to 87,777.56, 121,216.68 and 82,995.68 is: 114,613.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,777.56 : 121,216.68 = 82,995.68 : x
  2. Step 2: Convert to fraction form
    87,777.56/121,216.68 = 82,995.68/x
  3. Step 3: Cross multiply
    87,777.56x = 121,216.68 × 82,995.68
  4. Step 4: Simplify right side
    87,777.56x = 10,060,460,783.94
  5. Step 5: Solve for x
    x = 10,060,460,783.94/87,777.56
  6. Step 6: Final answer
    x = 114,613.13

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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.