Home / 129,975.84-179,364.38-72,611.44

Finding the Fourth Proportional to 129,975.84, 179,364.38 and 72,611.44

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Solution

The fourth proportional to 129,975.84, 179,364.38 and 72,611.44 is: 100,202.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,975.84 : 179,364.38 = 72,611.44 : x
  2. Step 2: Convert to fraction form
    129,975.84/179,364.38 = 72,611.44/x
  3. Step 3: Cross multiply
    129,975.84x = 179,364.38 × 72,611.44
  4. Step 4: Simplify right side
    129,975.84x = 13,023,905,105.04
  5. Step 5: Solve for x
    x = 13,023,905,105.04/129,975.84
  6. Step 6: Final answer
    x = 100,202.51

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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.