Home / 143,300.64-197,747.28-79,636.80

Finding the Fourth Proportional to 143,300.64, 197,747.28 and 79,636.80

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Solution

The fourth proportional to 143,300.64, 197,747.28 and 79,636.80 is: 109,894.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,300.64 : 197,747.28 = 79,636.80 : x
  2. Step 2: Convert to fraction form
    143,300.64/197,747.28 = 79,636.80/x
  3. Step 3: Cross multiply
    143,300.64x = 197,747.28 × 79,636.80
  4. Step 4: Simplify right side
    143,300.64x = 15,747,960,587.90
  5. Step 5: Solve for x
    x = 15,747,960,587.90/143,300.64
  6. Step 6: Final answer
    x = 109,894.56

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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.