Home / 143,880.32-198,557.30-79,356.96

Finding the Fourth Proportional to 143,880.32, 198,557.30 and 79,356.96

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Solution

The fourth proportional to 143,880.32, 198,557.30 and 79,356.96 is: 109,513.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,880.32 : 198,557.30 = 79,356.96 : x
  2. Step 2: Convert to fraction form
    143,880.32/198,557.30 = 79,356.96/x
  3. Step 3: Cross multiply
    143,880.32x = 198,557.30 × 79,356.96
  4. Step 4: Simplify right side
    143,880.32x = 15,756,903,713.81
  5. Step 5: Solve for x
    x = 15,756,903,713.81/143,880.32
  6. Step 6: Final answer
    x = 109,513.96

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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.