Home / 143,436.48-197,949.35-79,772.91

Finding the Fourth Proportional to 143,436.48, 197,949.35 and 79,772.91

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Solution

The fourth proportional to 143,436.48, 197,949.35 and 79,772.91 is: 110,090.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,436.48 : 197,949.35 = 79,772.91 : x
  2. Step 2: Convert to fraction form
    143,436.48/197,949.35 = 79,772.91/x
  3. Step 3: Cross multiply
    143,436.48x = 197,949.35 × 79,772.91
  4. Step 4: Simplify right side
    143,436.48x = 15,790,995,881.54
  5. Step 5: Solve for x
    x = 15,790,995,881.54/143,436.48
  6. Step 6: Final answer
    x = 110,090.51

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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.