Home / 129,361.27-178,453.23-75,611.17

Finding the Fourth Proportional to 129,361.27, 178,453.23 and 75,611.17

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Solution

The fourth proportional to 129,361.27, 178,453.23 and 75,611.17 is: 104,305.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,361.27 : 178,453.23 = 75,611.17 : x
  2. Step 2: Convert to fraction form
    129,361.27/178,453.23 = 75,611.17/x
  3. Step 3: Cross multiply
    129,361.27x = 178,453.23 × 75,611.17
  4. Step 4: Simplify right side
    129,361.27x = 13,493,057,510.58
  5. Step 5: Solve for x
    x = 13,493,057,510.58/129,361.27
  6. Step 6: Final answer
    x = 104,305.23

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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.