Home / 129,675.94-179,100.42-87,160.66

Finding the Fourth Proportional to 129,675.94, 179,100.42 and 87,160.66

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Solution

The fourth proportional to 129,675.94, 179,100.42 and 87,160.66 is: 120,380.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,675.94 : 179,100.42 = 87,160.66 : x
  2. Step 2: Convert to fraction form
    129,675.94/179,100.42 = 87,160.66/x
  3. Step 3: Cross multiply
    129,675.94x = 179,100.42 × 87,160.66
  4. Step 4: Simplify right side
    129,675.94x = 15,610,510,038.87
  5. Step 5: Solve for x
    x = 15,610,510,038.87/129,675.94
  6. Step 6: Final answer
    x = 120,380.93

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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.