Home / 143,931.76-198,620.96-79,403.56

Finding the Fourth Proportional to 143,931.76, 198,620.96 and 79,403.56

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Solution

The fourth proportional to 143,931.76, 198,620.96 and 79,403.56 is: 109,574.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,931.76 : 198,620.96 = 79,403.56 : x
  2. Step 2: Convert to fraction form
    143,931.76/198,620.96 = 79,403.56/x
  3. Step 3: Cross multiply
    143,931.76x = 198,620.96 × 79,403.56
  4. Step 4: Simplify right side
    143,931.76x = 15,771,211,314.62
  5. Step 5: Solve for x
    x = 15,771,211,314.62/143,931.76
  6. Step 6: Final answer
    x = 109,574.23

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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.