Home / 143,402.13-197,886.78-79,738.56

Finding the Fourth Proportional to 143,402.13, 197,886.78 and 79,738.56

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Solution

The fourth proportional to 143,402.13, 197,886.78 and 79,738.56 is: 110,034.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,402.13 : 197,886.78 = 79,738.56 : x
  2. Step 2: Convert to fraction form
    143,402.13/197,886.78 = 79,738.56/x
  3. Step 3: Cross multiply
    143,402.13x = 197,886.78 × 79,738.56
  4. Step 4: Simplify right side
    143,402.13x = 15,779,206,880.24
  5. Step 5: Solve for x
    x = 15,779,206,880.24/143,402.13
  6. Step 6: Final answer
    x = 110,034.68

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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.