Home / 142,195.26-196,228.25-78,531.69

Finding the Fourth Proportional to 142,195.26, 196,228.25 and 78,531.69

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Solution

The fourth proportional to 142,195.26, 196,228.25 and 78,531.69 is: 108,373.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,195.26 : 196,228.25 = 78,531.69 : x
  2. Step 2: Convert to fraction form
    142,195.26/196,228.25 = 78,531.69/x
  3. Step 3: Cross multiply
    142,195.26x = 196,228.25 × 78,531.69
  4. Step 4: Simplify right side
    142,195.26x = 15,410,136,098.24
  5. Step 5: Solve for x
    x = 15,410,136,098.24/142,195.26
  6. Step 6: Final answer
    x = 108,373.06

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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.