Home / 96,516.80-144,602.40-78,891.20

Finding the Fourth Proportional to 96,516.80, 144,602.40 and 78,891.20

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Solution

The fourth proportional to 96,516.80, 144,602.40 and 78,891.20 is: 118,195.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,516.80 : 144,602.40 = 78,891.20 : x
  2. Step 2: Convert to fraction form
    96,516.80/144,602.40 = 78,891.20/x
  3. Step 3: Cross multiply
    96,516.80x = 144,602.40 × 78,891.20
  4. Step 4: Simplify right side
    96,516.80x = 11,407,856,858.88
  5. Step 5: Solve for x
    x = 11,407,856,858.88/96,516.80
  6. Step 6: Final answer
    x = 118,195.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.