Home / 137,249.94-189,404.85-76,820.57

Finding the Fourth Proportional to 137,249.94, 189,404.85 and 76,820.57

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Solution

The fourth proportional to 137,249.94, 189,404.85 and 76,820.57 is: 106,012.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,249.94 : 189,404.85 = 76,820.57 : x
  2. Step 2: Convert to fraction form
    137,249.94/189,404.85 = 76,820.57/x
  3. Step 3: Cross multiply
    137,249.94x = 189,404.85 × 76,820.57
  4. Step 4: Simplify right side
    137,249.94x = 14,550,188,156.97
  5. Step 5: Solve for x
    x = 14,550,188,156.97/137,249.94
  6. Step 6: Final answer
    x = 106,012.34

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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.