Home / 129,744.84-179,129.60-99,474.04

Finding the Fourth Proportional to 129,744.84, 179,129.60 and 99,474.04

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Solution

The fourth proportional to 129,744.84, 179,129.60 and 99,474.04 is: 137,336.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,744.84 : 179,129.60 = 99,474.04 : x
  2. Step 2: Convert to fraction form
    129,744.84/179,129.60 = 99,474.04/x
  3. Step 3: Cross multiply
    129,744.84x = 179,129.60 × 99,474.04
  4. Step 4: Simplify right side
    129,744.84x = 17,818,744,995.58
  5. Step 5: Solve for x
    x = 17,818,744,995.58/129,744.84
  6. Step 6: Final answer
    x = 137,336.83

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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.