Home / 142,975.68-197,312.92-79,313.56

Finding the Fourth Proportional to 142,975.68, 197,312.92 and 79,313.56

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Solution

The fourth proportional to 142,975.68, 197,312.92 and 79,313.56 is: 109,456.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,975.68 : 197,312.92 = 79,313.56 : x
  2. Step 2: Convert to fraction form
    142,975.68/197,312.92 = 79,313.56/x
  3. Step 3: Cross multiply
    142,975.68x = 197,312.92 × 79,313.56
  4. Step 4: Simplify right side
    142,975.68x = 15,649,590,119.20
  5. Step 5: Solve for x
    x = 15,649,590,119.20/142,975.68
  6. Step 6: Final answer
    x = 109,456.31

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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.