Home / 142,845.75-197,127.14-79,193.25

Finding the Fourth Proportional to 142,845.75, 197,127.14 and 79,193.25

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Solution

The fourth proportional to 142,845.75, 197,127.14 and 79,193.25 is: 109,286.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,845.75 : 197,127.14 = 79,193.25 : x
  2. Step 2: Convert to fraction form
    142,845.75/197,127.14 = 79,193.25/x
  3. Step 3: Cross multiply
    142,845.75x = 197,127.14 × 79,193.25
  4. Step 4: Simplify right side
    142,845.75x = 15,611,138,483.84
  5. Step 5: Solve for x
    x = 15,611,138,483.84/142,845.75
  6. Step 6: Final answer
    x = 109,286.69

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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.