Home / 143,356.96-197,809.32-79,693.12

Finding the Fourth Proportional to 143,356.96, 197,809.32 and 79,693.12

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Solution

The fourth proportional to 143,356.96, 197,809.32 and 79,693.12 is: 109,963.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,356.96 : 197,809.32 = 79,693.12 : x
  2. Step 2: Convert to fraction form
    143,356.96/197,809.32 = 79,693.12/x
  3. Step 3: Cross multiply
    143,356.96x = 197,809.32 × 79,693.12
  4. Step 4: Simplify right side
    143,356.96x = 15,764,041,875.88
  5. Step 5: Solve for x
    x = 15,764,041,875.88/143,356.96
  6. Step 6: Final answer
    x = 109,963.56

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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.