Home / 143,905.63-198,591.06-79,377.34

Finding the Fourth Proportional to 143,905.63, 198,591.06 and 79,377.34

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Solution

The fourth proportional to 143,905.63, 198,591.06 and 79,377.34 is: 109,541.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,905.63 : 198,591.06 = 79,377.34 : x
  2. Step 2: Convert to fraction form
    143,905.63/198,591.06 = 79,377.34/x
  3. Step 3: Cross multiply
    143,905.63x = 198,591.06 × 79,377.34
  4. Step 4: Simplify right side
    143,905.63x = 15,763,630,090.58
  5. Step 5: Solve for x
    x = 15,763,630,090.58/143,905.63
  6. Step 6: Final answer
    x = 109,541.44

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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.