Home / 143,143.74-197,537.28-79,481.76

Finding the Fourth Proportional to 143,143.74, 197,537.28 and 79,481.76

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Solution

The fourth proportional to 143,143.74, 197,537.28 and 79,481.76 is: 109,684.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,143.74 : 197,537.28 = 79,481.76 : x
  2. Step 2: Convert to fraction form
    143,143.74/197,537.28 = 79,481.76/x
  3. Step 3: Cross multiply
    143,143.74x = 197,537.28 × 79,481.76
  4. Step 4: Simplify right side
    143,143.74x = 15,700,610,680.01
  5. Step 5: Solve for x
    x = 15,700,610,680.01/143,143.74
  6. Step 6: Final answer
    x = 109,684.23

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1.5x scale

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.