Home / 143,359.02-197,821.23-79,690.62

Finding the Fourth Proportional to 143,359.02, 197,821.23 and 79,690.62

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Solution

The fourth proportional to 143,359.02, 197,821.23 and 79,690.62 is: 109,965.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,359.02 : 197,821.23 = 79,690.62 : x
  2. Step 2: Convert to fraction form
    143,359.02/197,821.23 = 79,690.62/x
  3. Step 3: Cross multiply
    143,359.02x = 197,821.23 × 79,690.62
  4. Step 4: Simplify right side
    143,359.02x = 15,764,496,467.86
  5. Step 5: Solve for x
    x = 15,764,496,467.86/143,359.02
  6. Step 6: Final answer
    x = 109,965.15

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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.