Home / 129,796.08-179,113.32-72,437.88

Finding the Fourth Proportional to 129,796.08, 179,113.32 and 72,437.88

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Solution

The fourth proportional to 129,796.08, 179,113.32 and 72,437.88 is: 99,961.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,796.08 : 179,113.32 = 72,437.88 : x
  2. Step 2: Convert to fraction form
    129,796.08/179,113.32 = 72,437.88/x
  3. Step 3: Cross multiply
    129,796.08x = 179,113.32 × 72,437.88
  4. Step 4: Simplify right side
    129,796.08x = 12,974,589,180.56
  5. Step 5: Solve for x
    x = 12,974,589,180.56/129,796.08
  6. Step 6: Final answer
    x = 99,961.33

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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.