Home / 187,004.12-280,530.44-85,777.77

Finding the Fourth Proportional to 187,004.12, 280,530.44 and 85,777.77

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Solution

The fourth proportional to 187,004.12, 280,530.44 and 85,777.77 is: 128,677.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,004.12 : 280,530.44 = 85,777.77 : x
  2. Step 2: Convert to fraction form
    187,004.12/280,530.44 = 85,777.77/x
  3. Step 3: Cross multiply
    187,004.12x = 280,530.44 × 85,777.77
  4. Step 4: Simplify right side
    187,004.12x = 24,063,275,131.43
  5. Step 5: Solve for x
    x = 24,063,275,131.43/187,004.12
  6. Step 6: Final answer
    x = 128,677.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.