Home / 129,815.12-179,153.16-73,205.84

Finding the Fourth Proportional to 129,815.12, 179,153.16 and 73,205.84

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Solution

The fourth proportional to 129,815.12, 179,153.16 and 73,205.84 is: 101,028.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,815.12 : 179,153.16 = 73,205.84 : x
  2. Step 2: Convert to fraction form
    129,815.12/179,153.16 = 73,205.84/x
  3. Step 3: Cross multiply
    129,815.12x = 179,153.16 × 73,205.84
  4. Step 4: Simplify right side
    129,815.12x = 13,115,057,566.45
  5. Step 5: Solve for x
    x = 13,115,057,566.45/129,815.12
  6. Step 6: Final answer
    x = 101,028.74

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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.